TORU ISHIGAMI

Last Updated :2026/04/01

Affiliations, Positions
Graduate School of Advanced Science and Engineering, Associate Professor
Web Site
E-mail
ishigamihiroshima-u.ac.jp
Self-introduction
We use state-of-the-art computer simulation and machine learning to predict, analyze, and optimize the dynamics, physical properties, and process performance of various dispersion systems (colloidal suspensions, emulsions, aerosols, capillary suspensions, etc.). Keywords: Computational Fluid Dynamics; Direct numerical simulation; Granular flow; Free-interfacial flow; Three-phase flow; Four-phase flow; DEM; Immersed boundary method; Level set method; VOF; CLSVOF; Phase-field model; Complex geometry; Contact angle modeling; Arbitrary-shaped wall boundary model; Machine learning; Deep learning

Basic Information

Major Professional Backgrounds

  • 2004/04/01, Kawasaki Thermal Engineering Co.,Ltd., employee
  • 2010/06/01, Graduate School of Engineering, Kobe University, Assistant Professor
  • 2014/04/01, College of Bioresource Sciences, Nihon University, Assistant Professor
  • 2017/04/01, 2020/03/31, Graduate School of Engineering, Hiroshima University, Associate Professor

Educational Backgrounds

  • Kobe University, Faculty of Engineering, Department of Chemical Science and Engineering, 1998/04, 2002/03
  • Kobe University, Graduate School of Science and Technology, Department of Chemical Science and Engineering, 2002/04, 2004/03
  • Kobe University, Graduate School of Engineering, Department of Chemical Science and Engineering, 2008/04, 2010/03

Academic Degrees

  • Kobe University
  • Kobe University

Affiliated Academic Societies

  • The Society of Chemical Engineers, Japan
  • The Japanese Society for Multiphase Flow
  • The Society of Powder Technology, Japan
  • The Association of Powder Process Industry and Engineering, JAPAN

Educational Activity

Course in Charge

  1. 2025, Liberal Arts Education Program1, 1Term, Introductory Seminar for First-Year Students
  2. 2025, Undergraduate Education, 1Term, Basic Engineering Computer Programming
  3. 2025, Undergraduate Education, Second Semester, Basic Experiments in Chemistry
  4. 2025, Undergraduate Education, 2Term, Introduction to Fundamental Industry
  5. 2025, Undergraduate Education, 1Term, Numerical Calculation Method
  6. 2025, Undergraduate Education, Year, Graduation Thesis
  7. 2025, Graduate Education (Master's Program) , 3Term, Special Exercises on Chemical Engineering B
  8. 2025, Graduate Education (Master's Program) , 4Term, Special Exercises on Chemical Engineering B
  9. 2025, Graduate Education (Master's Program) , Year, Special Study on Chemical Engineering
  10. 2025, Graduate Education (Master's Program) , 3Term, Complex Fluid Dynamics
  11. 2025, Graduate Education (Doctoral Program) , Year, Special Study on Chemical Engineering

Research Activities

Academic Papers

  1. ★, Machine learning-driven fiber alignment strategies for air filter performance enhancement, CHEMICAL ENGINEERING SCIENCE, 323, 20260315
  2. Water and citric acid solubilization of potassium components in biomass combustion ash by kaolin addition, FUEL, 404, 20260115
  3. ★, Unraveling Oil-Microbubble Interactions via a Ternary Phase-Field Model and Machine Learning for Enhanced Surface Cleaning, LANGMUIR, 41(31), 20528-20543, 20250812
  4. ★, Prediction of fluid-particle dynamics and performance in fibrous filters obtained from X-ray CT using convolutional neural network and discrete phase model, CHEMICAL ENGINEERING JOURNAL, 514, 20250615
  5. ★, Novel physics-informed optimization framework for complex multi-physics problems: Implementation for a sweeping gas membrane distillation module, CHEMICAL ENGINEERING JOURNAL, 498, 20241015
  6. Classification performance analysis of a louver classifier with a tilted sidewall and its application to the separation of unburned carbon from biomass combustion ash, SEPARATION AND PURIFICATION TECHNOLOGY, 355, 20250301
  7. Data-driven approach for design and optimization of rotor-stator mixers for miscible fluids with different viscosities, CHEMICAL ENGINEERING JOURNAL, 499, 20241101
  8. ★, Effect of filter microstructure on filtration characteristics in a nonwoven bag filter: A resolved CFD-DEM approach coordinated with X-ray computed tomography image, CHEMICAL ENGINEERING SCIENCE, 299, 20241105
  9. Investigation on the Collection Mechanism of van der Waals Force in Air Filtration by Numerical Simulation and Empirical Model Development, INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 63(23), 10410-10426, 20240528
  10. Assessing the formation and destruction behaviors of fine powder agglomerates in vibrating fluidized beds using the Ergun equation, POWDER TECHNOLOGY, 428, 20231001
  11. ★, Performance analysis and optimization of sweep gas membrane distillation module using high-resolution computational model and machine learning, CHEMICAL ENGINEERING JOURNAL, 473, 20231001
  12. Hierarchical porous zeolite synthesis from coal fly ash via microwave heating, COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 661, 20230320
  13. An experimental study on recovering and concentrating ammonia by sweep gas membrane distillation, PROCESS SAFETY AND ENVIRONMENTAL PROTECTION, 171, 555-560, 202303
  14. ★, Prediction of submicron particle dynamics in fibrous filter using deep convolutional neural networks, PHYSICS OF FLUIDS, 34(12), 202212
  15. ★, Numerical simulation of aerosol permeation through microstructure of face masks coordinating with x-ray computed tomography images, AIP ADVANCES, 12(12), 20221201
  16. Performance characterization of a novel compact dust collector with pleated filter cartridges, SEPARATION AND PURIFICATION TECHNOLOGY, 305, 20230115
  17. ★, Application of deep learning neural networks for the analysis of fluid-particle dynamics in fibrous filters, CHEMICAL ENGINEERING JOURNAL, 455, 20230101
  18. ★, Numerical modeling for particulate flow through realistic microporous structure of microfiltration membrane: Direct numerical simulation coordinated with focused ion beam scanning electron microscopy, POWDER TECHNOLOGY, 410, 202209
  19. ★, CFD Model Development and Experimental Measurements forAmmonia-Water Separation Using a Vacuum Membrane DistillationModule, INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 61(21), 7381-7396, 20220601
  20. Influence of pulse-jet cleaning pressure on performance of compact dust collector with pleated filter operated in clean-on-time mode, ADVANCED POWDER TECHNOLOGY, 33(8), 20220611
  21. ★, Effect of liquid volume fraction and shear rate on rheological properties and microstructure formation in ternary particle/oil/water dispersion systems under shear flow: two-dimensional direct numerical simulation, SOFT MATTER, 18(22), 4338-4350, 20220608
  22. Numerical Simulation of Granular and Multiphase flows through Porous Media Obtained by Image Analysis, Journal of the Society of Powder Technology, Japan, 59, 167-177, 20220410
  23. ★, High-Resolution Numerical Simulation of Microfiltration of Oil-in-Water Emulsion Permeating through a Realistic Membrane Microporous Structure Generated by Focused Ion Beam Scanning Electron Microscopy Images, LANGMUIR, 38(6), 2094-2108, 20220215
  24. Influence of pulse-jet cleaning interval on performance of compact dust collector with pleated filter, SEPARATION AND PURIFICATION TECHNOLOGY, 279, 20211215
  25. Synthesis of NiCuZn ferrite nanoparticles from metallic nitrate solutions using the microwave direct denitration method and evaluation of its properties, PARTICULATE SCIENCE AND TECHNOLOGY, 39(4), 427-435, 20210519
  26. ★, Effect of Surface Wettability on Droplet Coalescence and Pressure Drop in a Fibrous Filter: Direct Numerical Simulation Coordinated with X-ray Computed Tomography Images, INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 60(10), 4168-4179, 20210317
  27. ★, Phase-Field Simulation of the Coalescence of Droplets Permeating through a Fibrous Filter Obtained from X-ray Computed Tomography Images: Effect of the Filter Microstructure, LANGMUIR, 36(17), 4711-4720, 20200505
  28. Micro-transfer patterning of dense nanoparticle layers: roles of rheology, adhesion and fracture in transfer dynamics, SOFT MATTER, 16(13), 3276-3284, 20200407
  29. Microwave direct denitration for synthesis of Cu-Ce-Zr-O composite oxide and its characterization, POWDER TECHNOLOGY, 362, 26-31, 20200215
  30. Electrophoretic classification based on differences in electrophoretic mobility caused by change in the applied electric field, POWDER TECHNOLOGY, 362, 586-590, 20200215
  31. Mechanisms of Adhesive Micropatterning of Functional Colloid Thin Layers, ACS APPLIED MATERIALS & INTERFACES, 11(43), 40602-40612, 20191030
  32. Synthesis of potassium-type zeolites by the reverse-micelle method with microwave heating, COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 555, 532-538, 20181020
  33. Effects of Surface Finish of Nonwoven Fabric Bag Filters on Filter Efficiency, CHEMICAL ENGINEERING & TECHNOLOGY, 45(1), 92-99, 20211102
  34. Effects of NO2 gas concentration on the degradation of polyphenylene sulfide non-woven bag filter at high temperature, ADVANCED POWDER TECHNOLOGY, 32(9), 3278-3287, 20210731
  35. Effect of ion species on change in particle electrophoresis caused by change in applied electric field, COLLOID AND INTERFACE SCIENCE COMMUNICATIONS, 43, 20210716
  36. ★, Direct numerical simulation of permeation of particles through a realistic fibrous filter obtained from X-ray computed tomography images utilizing signed distance function, POWDER TECHNOLOGY, 385, 131-143, 20210601
  37. Synthesis of zeolites with hierarchical porous structures using a microwave heating method, COLLOID AND INTERFACE SCIENCE COMMUNICATIONS, 42, 20210501
  38. Distributions of Fiber Mass, Air Permeability, and Filter Efficiency in Nonwoven Fabric Bag Filters, CHEMICAL ENGINEERING & TECHNOLOGY, 44(3), 535-541, 20210301
  39. Utilization of woody biomass combustion fly ash as a filler in the glue used for plywood production, ADVANCED POWDER TECHNOLOGY, 31(11), 4482-4490, 202011
  40. Numerical Simulation of Emulsion Permeating through Fibrous Filter in Coalescer, Japanese Journal of Multiphase Flow, 34(2), 310-317, 202006
  41. ★, Direct numerical simulation and experimental validation of flow resistivity of nonwoven fabric filter, AICHE JOURNAL, 66(2), 202002
  42. A continuous-flow exposure method to determine degradation of polyphenylene sulfide non-woven bag-filter media by NO2 gas at high temperature, ADVANCED POWDER TECHNOLOGY, 30(12), 2881-2889, 201912
  43. ★, Semiphenomenological model to predict hardening of solid-liquid-liquid systems by liquid bridges, GRANULAR MATTER, 21(4), 201911
  44. Existence Form of Potassium Components in Woody Biomass Combustion Ashes and Estimation Method of Its Enrichment Degree, ENERGY & FUELS, 32(1), 517-524, 201801
  45. Simulation of Permeation of Colloidal Particle Dispersion through Membrane Pores in Microfiltration, J. Soc. Powder Technol., Japan, 54, 362-369, 2017
  46. Permeation of oil-in-water emulsions through coalescing filter: two-dimensional simulation based on phase-field model, AIChE J., 62, 2525-2532, 2016
  47. Numerical simulation of coalescence phenomena of oil-in-water emulsions permeating through straight membrane pore., Colloids Surf. A, 491, 70-77, 2016
  48. Preparation and characterization of antifouling poly(vinyl chloride-co-poly(ethylene glycol)methyl ether methacrylate) membranes, J. Membr. Sci., 498, 414-422, 2016
  49. The Effect of Membrane Material and Surface Pore Size on the Fouling Properties of Submerged Membranes, Water, 8(12), 602, 2016
  50. Multiscale simulation method for flow and mass transfer characteristics in a reverse osmosis membrane module., Ind. Eng. Chem. Res., 54, 11413-11419, 2015
  51. Host manipulation by an ichneumonid spider-ectoparasitoid that takes advantage of preprogrammed web-building behaviours for its cocoon protection, J. Exp. Biol., 218, 2326-2332, 2015
  52. Numerical Simulation of Membrane Permeation of Oil-in-Water Emulsions containing Surfactants, MEMBRANE, 40, 155-160, 2015
  53. Three-dimensional phase-field simulations of membrane porous structure formation by thermally induced phase separation in polymer solutions, J. Membr. Sci., 483, 104-111, 2015
  54. Numerical modeling of concentration polarization in spacer-filled channel with permeation across reverse osmosis membrane, Ind. Eng. Chem. Res., 54, 1665-1674, 2015
  55. Effect of membrane polymeric materials on relationship between surface pore size and membrane fouling in membrane bioreactors, Appl. Surf. Sci., 330, 351-357, 2015
  56. Preparation of hydrophilic vinyl chloride copolymer hollow fiber membranes with antifouling properties, Appl. Surf. Sci., 324, 718-724, 2015
  57. Preparation of a PVDF hollow fiber blend membrane via thermally induced phase separation (TIPS) method using new synthesized zwitterionic copolymer, Desalin. Water Treat., 54, 2911-2919, 2015
  58. Effect of solidification rate of polymer solution on the die-swell during hollow fiber spinning by non-solvent induced phase separation, J. Membr. Sci., 472, 194-201, 2014
  59. Permeation of concentrated oil-in-water emulsions through a membrane pore: Numerical simulation using a coupled level set and the volume-of-fluid method, Soft Matter, 10, 7985-7992, 2014
  60. Coordinated Numerical Simulation of Porous Membrane Formation by the Phase Field Method and Particulate-Laden Flow, Kagaku Kogaku Ronbunshu, 40, 20-233, 2014
  61. Improvement of antifouling properties of polyvinylidene fluoride hollow fiber membranes by simple dip coating of phosphorylcholine copolymer via hydrophobic interactions, Ind. Eng. Chem. Res., 53(2491), 2497, 2014
  62. Solidification behavior of polymer solution during membrane preparation by thermally induced phase separation, Membranes, 4, 113-122, 2014
  63. Size and composition analyses of colloids in deep granitic groundwater using microfiltration/ultrafiltration while maintaining in situ hydrochemical conditions, Colloids Surf. A, 461, 279-286, 2014
  64. Preparation of poly (vinyl chloride) blend hollow fiber membranes with improved antifouling properties, MEMBRANE, 39, 168-172, 2014
  65. Permeation of dispersed particles through a pore and transmembrane pressure behavior in dead-end constant-flux microfiltration by two-dimensional direct numerical simulation, Ind. Eng. Chem. Res., 52(4650), 4659, 2013
  66. Solidification characteristics of polymer solution during polyvinylidene fluoride membrane preparation by nonsolvent-induced phase separation, J. Membr. Sci., 438, 77-82, 2013
  67. Direct visualization of fouling inside a hollow fiber ultrafiltration membrane caused by sodium alginate, Ind. Eng. Chem. Res., 52, 16375-16383, 2013
  68. Flow and heat transfer characteristics of ammonium alum hydrate slurries, Int. J. Refrigeration, 36, 81-87, 2013
  69. Fouling reduction of reverse osmosis membrane by surface modification via layer-by-layer assembly, Sep. Purif. Technol., 99, 1-7, 2012
  70. Effect of water in amino acid ionic liquids on CO2 permeability of amino acid ionic liquid-based facilitated transport membranes, J. Membr. Sci., 415, 168-175, 2012
  71. Amino acid ionic liquid-based facilitated transport membranes for CO2 separation, Chem. Commun., 48, 6903-6905, 2012
  72. Flow and heat transfer characteristics of ammonium alum hydrate slurry treated with surfactants, J. Chem. Eng. Jpn, 45, 136-141, 2012
  73. Effect of kinds of membrane materials on membrane fouling with BSA, J. Membr. Sci., 384, 157-165, 2011
  74. Effects of three natural organic matter types on cellulose acetate butyrate microfiltration membrane fouling., J. Membr. Sci., 379, 233-238, 2011
  75. Numerical study on non absorbable gas control using an immersed plate and an extraction in the evaporator/absorber in an absorption chiller, J. Chem. Eng. Jpn, 43, 561-568, 2010
  76. Effect of the flow rate of water dropping onto the evaporator in an absorption chiller, Memoirs of the Graduate School of Engineering, Kobe University, 1, 42-47, 2010
  77. Development of a Liquid Film Model for the Evaporator in an Absorption Chiller, Kagaku Kogaku Ronbunshu, 35(5), 417-424, 2009

Invited Lecture, Oral Presentation, Poster Presentation

  1. Microstructure Optimization for the Face Mask Performance by CFD-DPM Model, Ika Yuni Rachmawati, Kodai Hada, Mohammadreza Shirzadi, Tomonori Fukasawa, Kunihiro Fukui, Toru Ishigami, 7th International Conference on the Characterization and Control of Interfaces for High Quality Advanced Materials (ICCCI2022), 2022/11/16, Without Invitation, English
  2. Development of a numerical simulation model for solid-gas-liquid-liquid four-phase flow, Toru Ishigami, Ayumu NIshii, Tomonori Fukasawa, Kunihiro Fukui, The 11th International Conference on Multiphase Flow (ICMF2023), 2023/04/05, Without Invitation, English
  3. Numerical analysis of aerosol capturing behavior in face masks obtained by X-ray CT, Kodai Hada, Shirzadi Mohammadreza, Tomonori Fukasawa, Kunihiro Fukui, Toru Ishigami, The 11th International Conference on Multiphase Flow (ICMF2023), 2023/04/03, Without Invitation, English
  4. Direct Numerical Simulation of Granular and Multiphase Flows through Filter Microstructures Obtained by Image Analysis, Toru Ishigami, 7th International Conference on the Characterization and Control of Interfaces for High Quality Advanced Materials (ICCCI2022), 2022/11/16, With Invitation, English
  5. High-resolution numerical simulation of particulate flow permeating through fibrous filter obtained from X-ray CT images, Toru Ishigami, Mohammad Irwan Fatkhur Rozy, Yuto Maemoto, Masaki Ueda, Tomonori Fukasawa, Kunihiro Fukui, Mikio Sakai, Yasushi Mino, Kuniaki Goth, 4th International Symposium on Multiscale Multiphase Process Engineering (MMPE2022), 2022/09/27, Without Invitation, English
  6. High-Resolution Numerical Simulation of Multiphase and Granular Flows through Microfiltration Membrane Obtained from FIB-SEM, Toru Ishigami, University of Bremen, Guest seminar, 2022/05/30, With Invitation, English
  7. Pore-Scale Direct Numerical Simulation of Particulate Flow Permeating through Fibrous Filter Obtained from X-ray CT, Toru Ishigami, Mohammad Irwan Fatkhur Rozy, Yuto Maemoto, Masaki Ueda, Tomonori Fukasawa, Kunihiro Fukui, Mikio Sakai, Yasushi Mino, Kuniaki Gotoh, The 3rd International Symposium for Computational Particle Technology, 2021/11/18, Without Invitation, Japanese
  8. Permeation of particles through microfiltration membrane: direct numerical simulation coordinated with FIB-SEM, Kenta Kawashima, Mohammad Irwan Fatkhul Rozy, Masaki Ueda, Tomonori Fukasawa, Toru Ishigami, Kunihiro Fukui, Toshinori Tsuru, The 8th Asian Particle Technology Symposium (APT2021), 2021/10/13, Without Invitation, Japanese
  9. Direct numerical simulation of granular and mautiphase flows for chemical engineering processes, Toru Ishigami, NEPTIS-28 (28th Nisshin Engineering Particle Technology International Seminar), 2019/12/10, With Invitation, English
  10. Effect of the temperature on the degradation of polyphenylene sulfide non-woven bag-filter media by NO2 gas with a continuous-flow exposure method, K. Fukui, K. Ito, M. I. F. Rozy, T. Fukasawa, T. Ishigami, FILTECH2019, 2019/10/23, Without Invitation, English
  11. High-resolution printing of semidried nanoparticle thin films, Yasuyuki KUSAKA, Tomonori FUKASAWA, Toru ISHIGAMI, Nobuko FUKUDA, APCChE 2019, 2019/09/26, Without Invitation, English
  12. Direct numerical simulation of flow resistivity and oil droplet coalescence on x-ray ct images of nonwoven fabrics filters, Mohammad Irwan Fatkhur ROZY, Masaki UEDA, Tomonori FUKASAWA, Toru ISHIGAMI, Kunihiro FUKUI, APCChE 2019, 2019/09/26, Without Invitation, English
  13. Electrophoretic classification based on differences in electrophoretic mobility caused by change in the applied electric field, Kosei ONO, Tomonori FUKASAWA, Toru ISHIGAMI, Kunihiro FUKUI, APCChE 2019, 2019/09/25, Without Invitation, Japanese
  14. Evaluation of agglomeration and disruption for fine powder in vibrating fluidized bed, Tomonori FUKASAWA, Akihiro YAMANE, Toru ISHIGAMI, Kunihiro FUKUI, APCChE 2019, 2019/09/25, Without Invitation, Japanese
  15. Permeation of Gas through Filter Media: Three Dimensional CFD Simulation with Immersed Boundary Method, Mohammad Irwan Fatkhur Rozy, Toru Ishigami, Tomonori Fukasawa, Kunihiro Fukui, 2018/09/03, Without Invitation, English
  16. Synthesis of Cu-Ce-Zr oxide catalyst nanoparticle by microwave denitration method, A.D. Karisma, R. Nakamura, T. Fukasawa, T. Ishigami, K. Fukui, The 6th International Conference on the Characterization and Control of Interfaces for High Quality Advanced Materials and the 54th Summer Symposium on Powder Technology (ICCCI2018), 2018/07/11, Without Invitation, English
  17. Synthesis of potassium-type zeolite by reverse-micelle microwave method, T. Fukasawa, A. Horigome, A.D. Karisma, T. Ishigami, K. Fukui, The 6th International Conference on the Characterization and Control of Interfaces for High Quality Advanced Materials and the 54th Summer Symposium on Powder Technology (ICCCI2018), 2018/07/11, Without Invitation, English
  18. Analysis of gelation characteristics of concentrated suspension by capillary force, T. Ishigami, K. Anzai, C. Tokishige, T. Fukasawa, K. Fukui, S. Kihara, The 6th International Conference on the Characterization and Control of Interfaces for High Quality Advanced Materials and the 54th Summer Symposium on Powder Technology (ICCCI2018), 2018/07/10, Without Invitation, English
  19. Development of the Performance Test Method for the Plug-in Type Pulse Jet Dust Collector, Kunihiro Fukui, Shogo Fujiwara, Mohammad Irwan Fatkhur Rozy, Tomonori Fukasawa, Toru Ishigami, Hisashi Kudou, Chikao Kanaoka, FILTECH2018, 2018/03/14, Without Invitation, English
  20. Rheological Characterization of Capillary Suspension Involved with Particle Wettability, Toru Ishigami, Kouta Nakamura, Third International Symposium on Multiscale Multiprocess Engineering (MMPE2017), 2017/05/09, Without Invitation, English, Toyama, Japan

External Funds

Acceptance Results of Competitive Funds

  1. 2026/04/01, 2031/03/31
  2. Grant-in-Aid for Scientific Research (C), 2022/04/01, 2025/03/31
  3. 2022/04/01, 2023/03/31
  4. 2020, 2022
  5. 2019, 2022
  6. 2019, 2020
  7. 2019, 2022
  8. 2019, 2020
  9. 2019, 2020
  10. 2018, 2019
  11. 2017, 2018
  12. 2017, 2017
  13. 2017, 2018
  14. 2016, 2016
  15. 2015, 2015
  16. 2015, 2017
  17. 2015, 2016
  18. 2014, 2015
  19. 2012, 2014
  20. 2012, 2013

Social Activities

History as Committee Members

  1. Vice Coordinator, 2020/04, Technical Group of Computational Granular Simulation in The Association of Powder Process Industry and Engineering, JAPAN,