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). 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
    • Combustion
    • Models
    • Acoustics
    • Flame

  • Physics

    • Model
    • Flames
    • Heat

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

2024
Acoustic Design Parameter Change of a Pressurized Combustor Leading to Limit Cycle Oscillations, 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, 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, 16-32. Ghasemi, A., Christou, T., Kok, J. B. W., Stelzner, B. & Zarzalis, N.https://doi.org/10.1177/17568277231207252
2023
Thermodynamic analysis of the thermal and exergetic performance of a mixed gas-steam aero derivative gas turbine engine for power generation, Article e18927. Kok, J. B. W. & Haselhoff, E. A.https://doi.org/10.1016/j.heliyon.2023.e18927CFD-Based Prediction of Combustion Dynamics and Nonlinear Flame Transfer Functions for a Swirl-Stabilized High-Pressure Combustor, Article 2515. Kapucu, M. & Kok, J. B. W.https://doi.org/10.3390/en16062515
2022
Performance of FGM in Bluff-Body Stabilized H2-CO Diffusion FlameIn Coal, Biomass, Hydrogen, and Alternative Fuels; Controls, Diagnostics, and Instrumentation; Steam Turbine, Article V002T03A015. American Society of Mechanical Engineers. Hofsteenge, J. W. & Kok, J. B. W.https://doi.org/10.1115/GT2022-82937Numerical Simulations of Heat Loss Effect on Premixed Jet Flame Using Flamelet Generated Manifold Combustion Model, Article 730. Hofsteenge, J. W., Khourinia, A. G. & Kok, J. B. W.https://doi.org/10.3390/en15030730
2021
Numerical identification of precessing vortex core in an airblast swirl burner using PODIn "Advances in Acoustics, Noise and Vibration - 2021" Proceedings of the 27th International Congress on Sound and Vibration, ICSV 2021, Article 172047. Silesian University Press. Ghasemi Khourinia, A. & Kok, J. B. W.Statististical study of high amplitude oscillations in a premix combustorIn "Advances in Acoustics, Noise and Vibration - 2021" Proceedings of the 27th International Congress on Sound and Vibration, ICSV 2021. Silesian University Press. Arredondo, S. N. & Kok, J.

Research profiles

Address

University of Twente

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

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Organisations

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