Horst Complex

dr.ir. J.B.W. Kok (Jim)

Associate Professor
ET-TFE-TE
Horst Complex N221
j.b.w.kok@utwente.nl
+31534892582
Business card

Jim Kok received his MSc degree in Mechanical Engineering in 1985 at the University of Twente (Enschede, NL) in the group of Fluid Mechanics and Heat Transfer. Subsequently he obtained his PhD degree at this university in 1989 on the subject of "dynamics of gas bubbles moving through liquid". Subsequently he became a member of faculty. He performed research on turbulent combustion with application on gas turbine engines. Before 2000 the focus was on reduction of nitric oxide emission, but since then the interest focused on the interaction of combustion dynamics and acoustics and engine design and operation. The work involves both CFD modeling and experiments.His teaching includes courses on turbulent combustion theory, modeling and analysis for gaseous fuels and liquid fuels.

Expertise

  • Engineering

    • Combustor
    • Thermoacoustic Instability
    • Transfer Function
    • Combustion Chamber
    • Limit Cycle

  • Physics

    • Acoustics
    • Thermoacoustics
    • Large Eddy Simulation

Organisations

Research covers the fields of combustion dynamics, acoustics, heat transfer and thermodynamics. In numerical methods a compressible non-adiabatic reaction progress variable combustion model was developed that can be applied on turbulent flows with LES or RaNS approach. The experimental research includes work on an atmospheric combustor in limit cycle oscillation and a pressurized combustor using laser diagnostics and multi microphone techniques. Specific applications studied are gas turbine engine power generation and propulsion. The main theme is pressurized and atmospheric combustion of sustainable fuels in gas turbine (aero) engines and furnaces and boilers. Fuels can be low calorific gases, NH3, H2 of jet fuel. Important phenomena studied are combustion stability, transient combustion behavior and emission of toxic species

Publications

2026

Low-order modeling of thermoacoustic instability: Modal competition induced by fluid–structure interaction (2026)Combustion and flame, 286. Article 114841. Passato, D., Erkal, B., Bourquard, C., Kok, J. B. W. & Lopez Arteaga, I.https://doi.org/10.1016/j.combustflame.2026.114841

2025

Exploring liquid fuel combustion dynamics in a swirl burner using dynamic mode decomposition (2025)Engineering Applications of Computational Fluid Mechanics, 19(1). Article 2557009. Ghasemi, A. & Kok, J. B. W.https://doi.org/10.1080/19942060.2025.2557009Linear Thermoacoustic Stability Prediction for Two Hot Blast Stove Burner Designs Using a CFD-Based Flame Transfer Function (2025)Flow, turbulence and combustion, 115(4), 1755–1778. Hofsteenge, J. W. & Kok, J. B. W.https://doi.org/10.1007/s10494-025-00694-zGreencode Project Dataset for Chemistry Reduction with CSP (2025)[Dataset Types › Dataset]. 4TU.Centre for Research Data. Ghasemi Khourinia, A., Derksen, M. A. F. & Kok, J. B. W.https://doi.org/10.4121/5423254e-bc6e-4006-ad76-a2c4ee13f6bcThermoacoustic Instabilities in Hydrogen-Methane Combustion: Analysis of Self-Excited Flame Dynamics in a Lab-Scale Cyclone Burner (2025)In Proceedings of ASME Turbo Expo 2025: Turbomachinery Technical Conference and Exposition. Article v03bt04a001 (Proceedings of the ASME Turbo Expo; Vol. 3B: Combustion, Fuels & Emissions). American Society of Mechanical Engineers. Erkal, B. & Kok, J. B. W.https://doi.org/10.1115/GT2025-152971Learning and Characterizing Chaotic Attractors of a Lean Premixed Combustor (2025)Energies, 18(7). Article 1852. Navarro-Arredondo, S. & Kok, J. B. W.https://doi.org/10.3390/en18071852

2024

Combustion dynamics of turbulent premixed combustors at elevated pressure (2024)[Thesis › PhD Thesis - Research UT, graduation UT]. University of Twente. Kapucu, M.https://doi.org/10.3990/1.9789036563932Acoustic Design Parameter Change of a Pressurized Combustor Leading to Limit Cycle Oscillations (2024)Energies, 17(8). Article 1885. Kapucu, M., Kok, J. B. W. & Pozarlik, A. K.https://doi.org/10.3390/en17081885Experimental Investigation of Thermoacoustics and High-Frequency Combustion Dynamics with Band Stop Characteristics in a Pressurized Combustor (2024)Energies, 17(7). Article 1680. Kapucu, M., Kok, J. B. W. & Pozarlik, A. K.https://doi.org/10.3390/en17071680Combustion dynamics analysis of a pressurized airblast swirl burner using proper orthogonal decomposition (2024)International journal of spray and combustion dynamics, 16(1-2), 16-32. Ghasemi, A., Christou, T., Kok, J. B. W., Stelzner, B. & Zarzalis, N.https://doi.org/10.1177/17568277231207252

Research profiles

Courses taught:

!989-2008: Engineering Thermodynamics (B ME)

Current: Turbulent Combustion (M ME), Multiphase flow, spray evolution (M ME), Basics in Process Simulation (M SET)

Courses academic year 2026/2027

Courses in the current academic year are added at the moment they are finalised in the Osiris system. Therefore it is possible that the list is not yet complete for the whole academic year.

Courses academic year 2025/2026

Courses academic year 2024/2025

NWO project DYNAF (3 PhD students)

Marie Sklodowska Curie project MAGISTER (3 PhD students at UT, 12 at partners), coordinator.

Earlier:

Marie Sklodowska Curie project  COPA (3 PhD students at UT, 12 at partners)

Marie Sklodowska Curie project LIMOUSINE  (3 PhD students at UT, 12 at partners), coordinator.

EU Frame 5 projects: Flameseek, HEGSA, DESIRE

Address

University of Twente

Horst Complex (building no. 20), room N221
De Horst 2
7522 LW Enschede
Netherlands

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