40 citations · 43 across the 7 of their papers we have counts for
7 papers
Compressibility Driven Wake Transition and Hysteresis over Cargo Aircraft Aftbodies
Chitrarth Prasad, Rajesh Ranjan, Daniel J. Garmann +1
Aft sections of military cargo aircraft employ flat surfaces at high upsweep angles to accommodate ramp doors, producing flow features that affect cargo-drop accuracy, paratrooper…
Global stability analysis of flow behind an upswept aftbody
Qiong Liu, Datta V. Gaitonde, Rajesh Ranjan
Wakes of aircraft and automobiles with relatively flat slanted aftbodies are often characterized by a streamwise-oriented vortex pair, whose strength affects drag and other crucial…
Meandering dynamics of streamwise vortex pairs in afterbody wakes
Rajesh Ranjan, J. -Ch. Robinet, Datta Gaitonde
Wakes of upswept afterbodies are often characterized by a counter-rotating streamwise vortex pair. The unsteady dynamics of these vortices are examined with a spatio-temporally res…
Prediction of separation and transition on a low-pressure turbine blade using a RANS grid
Rajesh Ranjan, S. M. Deshpande, Roddam Narasimha
Flow past a high-lift low-pressure turbine (LPT) blade in a cascade could be quite complex as phenomena like separation and transition are often involved. For a highly loadedT106A…
A Robust Approach for Stability Analysis of Complex Flows Using Navier-Stokes Solvers
Rajesh Ranjan, S. Unnikrishnan, Datta Gaitonde
Direct methods to obtain global stability modes are restricted by the daunting sizes and complexity of Jacobians encountered in general three-dimensional flows. Jacobian-free itera…
An assessment of the two-layer quasi-laminar theory of relaminarization through recent high-Re accelerated TBL experiments
Rajesh Ranjan, Roddam Narasimha
The phenomenon of relaminarization is observed in many flow situations, including that of an initially turbulent boundary layer subjected to strong favourable pressure gradients. A…