kumar 
ictsresin
Research Interests:
- Fluid Dynamics and Turbulence,
- Active Matter,
- Pattern formation,
- Biophysics
For those who need convincing that I do actual work: Google Scholar, Orcid
Simulations:
Physics, for me, lives in the visuals. These simulations span the range of problems I have explored during my PhD — active filaments, nematic fields, deformable surfaces, and turbulent flows. Some are tied to publications; others are explorations I found too beautiful not to share.
▶ Filaments in active turbulence
▶ Active filaments in Navier-Stokes
▶ Heterogenous active turbulence
▶ Active shape dynamics and cytokinesis
▶ Dynamical remeshing in deformable surface
▶ Topological defects in nematic fields on sphere
▶ Dynamical modes in active nematics on sphere
▶ Flowers in Taylor-Green vortices
▶ Vortex Condensation in Active Turbulence
The compiler complained. The referees complained. But here we are.
Publications:
4. Geometry, elasticity, and activity in the transport of self-propelled filaments in turbulence
Kunal Kumar, A. Sahoo , R. K. Singh , S.S. Ray
ArXiv:2605.24901 (Preprint, 2026)
3. Active geometrodynamics predicts the emergence of cytokinesis
A.S. Rajput, Kunal Kumar, M. Nishikawa, K.V. Kumar
bioRxiv:2025.11.07.683232 (Preprint, 2025)
2. Turbulence-Induced Fluctuating Interfaces in Heterogeneously-Active Suspensions
S. Mukherjee*, Kunal Kumar*, S.S. Ray
1. Onset of intermittency and multiscaling in active turbulence
K.V. Kiran, Kunal Kumar, A. Gupta, R. Pandit, S.S. Ray
Physical Review Letters (2025)
When not staring at turbulent flows on a screen, I am usually generating some turbulence of my own — on a bicycle, a running trail, a badminton or squash court, or throwing punches in kung fu.