4 papers
Scalar dissipation anomaly and scalar-gradient scaling in turbulence: A joint velocity-scalar multifractal view
Dhawal Buaria
We revisit the problem of scalar dissipation anomaly and scaling of scalar gradients in passive scalar turbulence using theory and data from well-resolved direct numerical simulati…
Scalar gradient structure and dynamics in turbulent mixing at high Reynolds and Schmidt numbers
Ruqaiya Islam Mishi, Dhawal Buaria
How well turbulence mixes a scalar is governed by the scalar dissipation rate , making scalar gradients central to turbulent mixing. We study the structur…
Unified multifractal description of longitudinal and transverse intermittency in fully developed turbulence
Dhawal Buaria
Small-scale intermittency is a defining feature of fully developed fluid turbulence, marked by rare and extreme fluctuations of velocity increments and gradients that defy mean-fie…
Universality of extreme events in turbulent flows
Dhawal Buaria, Alain Pumir
The universality of small scales, a cornerstone of turbulence, has been nominally confirmed for low-order mean-field statistics, such as the energy spectrum. However, small scales…