Publications

Journal Publications 

1. Kumar V.*, Hasegawa Y., Kumar P.*, Hikita T.*, Ding M., Kametani Y., and Nakayama M.,“Complex relationship among vessel diameter, shear stress and blood pressure controlling vessel pruning during angiogenesis”, PLOS Computational Biology, 22(1), 2026, DOI: https://doi.org/10.1371/journal.pcbi.1013565.

2. Han X., Li A., Cheng L., He S., Kumar P., Gu H and Wang J., “Two-group bubble interfacial area concentration correlation for two-phase flows in narrow rectangular flow channels”, International Journal of Heat and Mass Transfer, 252, 127453 (2025), DOI: https://doi.org/10.1016/j.ijheatmasstransfer.2025.127453.

3. Biswal S. K., Kumar P. and Tiwari S., “Three-dimensional numerical investigation of vortex-induced vibration of a circular cylinder at low Reynolds number”, Fluid Dynamics Research, 56, 025506 (2024), DOI: https://doi.org/10.1088/1873-7005/ad3be8.

4. Kumar P., Kumar V., Chen D. and Hasegawa, Y., “Implementation of a level-set based volume penalization method for solving fluid flows around bluff bodies”, Physics of Fluids, 36, 013608 (2024), DOI: https://doi.org/10.1063/5.0175971.

5. Chen D., Kumar P., Kametani Y. and Hasegawa Y., “Multi-objective topology optimization of heat transfer surface using level-set method and adaptive mesh refinement in OpenFOAM”, International Journal of Heat and Mass Transfer, 221, 125099 (2024), DOI: https://doi.org/10.1016/j.ijheatmasstransfer.2023.125099.

6. Kumar A., Kumar P. and Tiwari S., “Direct numerical simulations of a surface-mounted circular cylinder subjected to pulsatile flow at the inlet”, Fluid Dynamics Research, (2023) DOI: https://doi.org/10.1088/1873-7005/ad18dc.

7. Biswal S. K., Kumar P. and Tiwari S., “Vortex-induced vibration of a heated circular cylinder at low Reynolds number: flow and thermal characteristics”, Journal of Flow Visualization and Image Processing, 30, 69-86 (2023), DOI: https://doi.org/10.1615/JFlowVisImageProc.2022040478.

8. Kumar P. and Tiwari S., “Effect of cross-confinement on unsteady wake characteristics of circular cylinder immersed in shear flow”, Progress in Computational Fluid Dynamics, 21, 195-208 (2021), DOI: https://doi.org/10.1504/PCFD.2021.116525.

9. Kumar P. and Tiwari S., “Effect of axis ratio on unsteady wake of surface mounted elliptic cylinder immersed in shear flow”, Fluid Dynamics Research, 53, 045502 (2021), DOI: https://doi.org/10.1088/1873-7005/ac105e.

10. Kumar P. and Tiwari S., “Effects of size ratio and inter-cylinder spacing on wake transition in flow past finite inline circular cylinders mounted on plane surface”, Physics of Fluids, 33, 023602 (2021), DOI: https://doi.org/10.1063/5.0037712.  

11. Harikrishnan S., Kumar P. and Tiwari S., “Flow transition in periodically fully developed wavy channels”, Physics of Fluids, 33, 073605 (2021) (Selected as Editor’s pick), DOI: https://doi.org/10.1063/5.0053003.  

12. Kumar P. and Tiwari S., “Effects of size and position of upstream cylinder on wake transition in flow past two inline square cylinders”, Journal of Flow Visualization and Image Processing, 27, 143-184 (2020), DOI: http://doi.org/10.1615/JFlowVisImageProc.2020030992.

13. Kumar P. and Tiwari S., “Wake transition for surface mounted rectangular cylinder due to incoming shear flow”, International Journal of Heat and Fluid Flow, 85, 108614, (2020), DOI: https://doi.org/10.1016/j.ijheatfluidflow.2020.108614.

14. Kumar P. and Tiwari S., “Effect of incoming shear on unsteady wake in flow past surface mounted polygonal prism”, Physics of Fluids, 31, 113607 (2019), DOI: https://doi.org/10.1063/1.5123672.

15. Kumar P., Manelil N. P. and Tiwari S., “Effects of shear intensity and aspect ratio on threedimensional wake characteristics of flow past surface mounted circular cylinder”, Physics of Fluids, 31, 043602 (2019) (Selected as Featured article), DOI: https://doi.org/10.1063/1.5081795.

16. Mithun M. G., Kumar P. and Tiwari S., “Numerical investigations on unsteady flow past two identical inline square cylinders oscillating transversely with phase difference”, Journal of Applied Fluid Mechanics, 11, 847-859 (2018), DOI: http://doi.org/10.29252/jafm.11.04.28314.

International Conferences

1. Kumar P., Chen D., Kumar V. and Hasegawa Y., “Shape optimization for drag reduction in flow past a circular cylinder in the unsteady laminar regime”, proceedings of the 10th International and 50th National Conference on Fluid Mechanics and Fluid Power (FMFP-2023), IIT Jodhpur, Jodhpur, India, December 20-22, 2023.

2. Kumar V., Nakakura M., Kumar P., Nakajima H., Hasegawa Y. and Karniadakis G.E., “Predicting the blood flow in zebrafish hindbrain with multiple planes RBCs signal using Artificial Intelligence Velocimetry (AIV)”, proceedings of the 10th International and 50th National Conference on Fluid Mechanics and Fluid Power (FMFP-2023), IIT Jodhpur, Jodhpur, India, December 20-22, 2023.

3. Chen D., Kumar P. and Hasegawa Y., “Multi-objective topology optimization of heat exchangers by using a custimized optimizer in OpenFOAM”, proceedings of the 14th International ERCOFTAC Symposium on Engineering Turbulent Modelling and Measurements (ETMM-14), Barcelona, Spain, September 06-08, 2023. 

4. Kumar A., Kumar P. and Tiwari S., “Effect of inlet pulsation frequency on unsteady wake of a finite height surface mounted circular cylinder”, proceedings of the 23rd Australasian Fluid Mechanics Conference - 23AFMC, Sydney, Australia, December 4-8, 2022.

5. Kumar P., Biswal S. K. and Tiwari S., “Effect of side blockage on unsteady wake characteristics in flow past surface mounted circular cylinder”, proceedings of the 8th International and 47th National Conference on Fluid Mechanics and Fluid Power (FMFP-2020), IIT Guwahati, Guwahati, India, December 09-11, 2020.

6. Biswal S. K., Kumar P. and Tiwari S., “Effects of blockage and mass ratios on vortex induced vibration of a square cylinder”, proceedings of the 8th International and 47th National Conference on Fluid Mechanics and Fluid Power (FMFP-2020), IIT Guwahati, Guwahati, India, December 09-11, 2020.

7. Kumar P. and Tiwari S., “Unsteady wake characteristics in flow past two inline surface mounted circular cylinders”, in ASTFE digital library (10.1615/TFEC2019.cmd.028455), 4th Thermal and Fluids Engineering Conference (TFEC), Las Vegas, NV, USA, April 14-17, 2019.

8. Kumar P. and Tiwari S., “Three-dimensional unsteady wake characteristics of rectangular cylinder”, in Journal of Physics: Conference Series (http://doi.org/10.1088/1742-6596/1240/1/012060), 2nd International Conference on New Frontiers in Engineering, Science and Technology (NFEST-2019), NIT Kurukshetra, Kurukshetra, Haryana, India, February 18-22, 2019.

9. Kumar P. and Tiwari S., “Effect of size and location of upstream cylinder on transitional characteristics behind downstream cylinder”, proceedings of the 7th International and 45th National Conference on Fluid Mechanics and Fluid Power (FMFP-2018), IIT Bombay, Mumbai, India, December 10-12, 2018.

10. Chikine R., Kumar P., Tiwari S. and Sundararajan T., “Numerical investigations on unsteady wakes of longitudinally oscillating tandem square cylinders”, proceedings of the 7th International and 45th National Conference on Fluid Mechanics and Fluid Power (FMFP-2018), IIT Bombay, Mumbai, India, December 10-12, 2018,.

11. Naik H., Kumar P. and Tiwari S., “Effect of location of winglet pair on flow and heat transfer in flow past surface-mounted cylinder”, proceedings of the 1st International Conference on Mechanical Engineering (INCOM 2018), Jadavpur Univesity, Kolkata, India, January 4-6, 2018. 

12. Das A., Kumar P. and Tiwari S., “Low speed aerodynamics of pitching airfoil”, proceedings of the 1st International Conference on Mechanical Engineering (INCOM 2018), Jadavpur University, Kolkata, India, January 4-6, 2018,. 

13. Dhaka P., Kumar P. and Awale A., “Finite element simulation of acoustic wave propagation behaviour in snow”, proceedings of the International Conference on Science and Technology (ICST2014), S B Patil College of Engineering Indapur, Pune, India, February 21-22, 2014.

National Conferences

1. Kumar P., Chen D., Han X. and Hasegawa Y., “Topology optimization of a pin-fin array for heat transfer enhancement and pressure drop suppression in turbulent flow”, proceedings of the 60th Japan Heat Transfer Symposium, Fukuoka International Congress Center, Fukuoka, Japan, May 25-27, 2023. 

2. Han X., Osawa T., Chen D., Kumar P., Guan F. and Hasegawa Y., “Effects of different temperature measurement methods on evaluation of heat transfer rate in the single-blow technique”, proceedings of the 60th Japan Heat Transfer Symposium, Fukuoka International Congress Center, Fukuoka, Japan, May 25-27, 2023.

3. Kumar P., Chen D. and Hasegawa Y., “Application of volume penalization method to topology optimization of turbulent heat transfer surface in OpenFOAM”, proceedings of the JSME Thermal Engineering Conference, University of Tokyo, Tokyo, Japan, October 08-09, 2022.

4. Chen D., Kumar P. and Hasegawa Y., “Topology optimization of conjugate heat transfer systems using a customized optimizer in OpenFOAM”, proceedings of the JSME Thermal Engineering Conference, University of Tokyo, Tokyo, Japan, October 08-09, 2022.

5. Biswal S. K., Kumar P.  and Tiwari S., “On dynamic and heat transfer characteristics of elastically mounted heated circular cylinder undergoing VIV”, proceedings of the 48th National Conference on Fluid Mechanics and Fluid Power (FMFP-2021), BITS Pilani, Pilani Campus, RJ, India, December 27-29, 2021.

6. Kumar P. and Tiwari S., “Effect of angle of incidence on unsteady wake characteristics for flow past surface mounted square cylinder”, proceedings of the 46th National Conference on Fluid Mechanics and Fluid Power (FMFP-2019), PSG College of Technology, Coimbatore, India, December 9-11, 2019.

7. Kumar P. and Tiwari S., “Characteristics of unsteady wake for flow past two inline square cylinders”, proceedings of the 44th National Conference on Fluid Mechanics and Fluid Power (FMFP-2017), Amrita University, Amritapuri Campus, Kollam, Kerala, India, December 14-16, 2017.

8. Naik H., Kumar P. and Tiwari S., “Flow structure around a surface-mounted finite height circular cylinder”, proceedings of the 44th National Conference on Fluid Mechanics and Fluid Power (FMFP2017), Amrita University, Amritapuri Campus, Kollam, Kerala, India, December 14-16, 2017.