Rahul Deshpande

Data-driven enhancement of coherent structure-based models for predicting instantaneous wall turbulence

Rahul Deshpande, Charitha M de Silva, Myoungkyu Lee, Jason P Monty, Ivan Marusic

Journal article  |  2021  |  INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW

Predictions of the spatial representation of instantaneous wall-bounded flows, via coherent structure-based models, are highly sen..

Characterising Momentum Flux Events in High Reynolds Number Turbulent Boundary Layers

Rahul Deshpande, Ivan Marusic

Journal article  |  2021  |  Fluids

The momentum flux in a canonical turbulent boundary layer is known to have a time-series signature that is characterised by a high..

Active and inactive components of the streamwise velocity in wall-bounded turbulence

Rahul Deshpande, Jason P Monty, Ivan Marusic

Journal article  |  2021  |  JOURNAL OF FLUID MECHANICS

Townsend (J. Fluid Mech., vol. 11, issue 1, 1961, pp. 97-120) introduced the concept of active and inactive motions for wall-bound..

Three-dimensional structure and scaling of a canonical turbulent boundary layer

Rahul Deshpande

Thesis / Dissertation  |  2021

Wall-bounded turbulent flows are pervasive in nature and are also encountered in many engineering applications; common examples in..

Large-scale spanwise periodicity in a canonical turbulent boundary layer

Rahul Deshpande, Jason P Monty, Ivan Marusic

Conference Proceedings  |  2020  |  Proceedings of the 22nd Australasian Fluid Mechanics Conference AFMC2020

The present study reports empirical evidence for periodic organization of very large-scale motions (also known as superstructures)..

Active and inactive motions in wall turbulence

Rahul Deshpande, Jason P Monty, Ivan Marusic

Conference Proceedings  |  2020  |  Proceedings of the 22nd Australasian Fluid Mechanics Conference AFMC2020

Reynolds shear stress is the key momentum transport term in wall turbulence and as a consequence has been the focus of numerous th..

Two-dimensional cross-spectrum of the streamwise velocity in turbulent boundary layers

Rahul Deshpande, Dileep Chandran, Jason P Monty, Ivan Marusic

Journal article  |  2020  |  Journal of Fluid Mechanics

In this paper, we present the two-dimensional (2-D) energy cross-spectrum of the streamwise velocity (u) component and use it to t..

A scheme to correct the influence of calibration misalignment for cross-wire probes in turbulent shear flows

Rahul Deshpande, Jason P Monty, Ivan Marusic

Journal article  |  2020  |  Experiments in Fluids

Velocity fluctuations, measured via multi-wire probes, are very sensitive to misalignment between the calibration coordinate syste..

Streamwise inclination angle of large wall-attached structures in turbulent boundary layers

Rahul Deshpande, Jason P Monty, Ivan Marusic

Journal article  |  2019  |  JOURNAL OF FLUID MECHANICS

The streamwise inclination angle of large wall-attached structures, in the log region of a canonical turbulent boundary layer, is ..

Correcting hotwire misalignment errors for wall-bounded turbulence measurements

Rahul Deshpande, Jason Monty, Ivan Marusic

Conference Proceedings  |  2019  |  Proceedings of the 11th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2019

In case of wall-bounded flows, the lateral velocity fluctuations measured via hotwire anemometry (e.g. X-probes) are extremely sen..