11 citations · 15 across the 13 of their papers we have counts for
13 papers
Unification of The Navier-Stokes Equation for Fluid Mechanics and Aeroacoustics
Tapan K. Sengupta
The Navier-Stokes equation for a compressible Newtonian fluid is reassessed, in view of recent investigation results on the foundations of aeroacoustics. In the process, the role a…
Coupled Modal-Nonmodal Interactions Due to Periodic, Infinite Train of Convecting Vortices (TCV)
Jyothi Kumar Puttam, Prasannabalaji Sundaram, Vajjala K. Suman +4
Events during transition to turbulence either follow modal or non-modal routes, or combinations of the two. Here, we report a computational investigation of strong freestream excit…
DNS and role of round-off error: Two-Dimensional Taylor-Green vortex problem
V. K. Suman, T. K. Sengupta
The role of round-off errors on the receptivity and instability of fluid flows are conclusively established for the first time using high accuracy simulations of the benchmark two-…
Pulse propagation in the quiescent environment during direct numerical simulation of Rayleigh-Taylor instability: Solution by Bromwich contour integral method
Tapan K. Sengupta, Bhavna Joshi, Prasannabalaji Sundaram
In: {\it "Three-dimensional direct numerical simulation (DNS) of Rayleigh-Taylor instability (RTI) trigerred by acoustic excitation -- Sengupta et al. {\bf 34},054108 (2022)"} the…
Bifurcation sequence of two-dimensional Taylor-Green vortex via vortex interactions: Evolution of energy spectrum
Tapan K. Sengupta, Ankan Sarkar, Bhavna Joshi +2
The vorticity dynamics of the two-dimensional (2D) Taylor-Green vortex (TGV) problem is investigated in its multi-cellular configuration by solving the incompressible Navier-Stokes…
Perturbation Field in The Presence of Uniform Mean Flow: Doppler Effect for Flows and Acoustics
Tapan K. Sengupta, Aditi Sengupta, Bhavna Joshi +1
Having developed the perturbation equation for a dissipative quiescent medium for planar propagation using the linearized compressible Navier-Stokes equation without the Stokes' hy…
Equation for Aeroacoustics in a Quiescent Environment
Tapan K. Sengupta, Aditi Sengupta, Bhavna Joshi
The perturbation equation for aeroacoustics has been derived in a dissipative medium from the linearized compressible Navier-Stokes equation without any assumption, by expressing t…
Evolution of Perturbation in Quiescent Medium
Tapan K. Sengupta, Shivam K. Jha, Aditi Sengupta +2
Here, the perturbation equation for a dissipative medium is derived from the first principle from the linearized compressible Navier-Stokes equation without Stokes's hypothesis. Th…
Acoustic Equation in a Lossy Medium
Tapan K. Sengupta, Prasannabalaji Sundaram, Aditi Sengupta
Here, the acoustic equation for a lossy medium is derived from the first principle from the linearized compressible Navier-Stokes equation without Stokes' hypothesis. The dispersio…
Determining Parameter Ranges for High Accuracy Large Eddy Simulation by Lax-Wendroff Method
V. K. Suman, Soumyo Sengupta, P. Sundaram +2
The analysis of Lax-Wendroff (LW) method is performed by the generic modified differential equation (MDE) approach in the spectral plane using Fourier transform. In this approach,…
Quantifying Resolutions for DNS and LES for Lax-Wendroff Method: Application to Uniform/Non-Uniform Compact Schemes
V. K. Suman, P. Sundaram, Soumyo Sengupta +2
The global spectral analysis (GSA) of numerical methods ensures that the dispersion relation preserving (DRP) property is calibrated in addition to ensuring numerical stability, as…
Ultrasound Triggering of Rayleigh-Taylor Instability: Solution of Compressible Navier-Stokes Equation by a Non-Overlapping Parallel Compact Scheme
Prasannabalaji Sundaram, Aditi Sengupta, Tapan K. Sengupta
Rayleigh-Taylor instability (RTI) occurs at the interface of two media when the heavier fluid is accelerated into the lighter fluid and is a prototypical hydrodynamic event present…
Analysis of pseudo-spectral methods used for numerical simulation of turbulence
Tapan K. Sengupta, Suman V. K., Prasannabalaji Sundaram +1
Global spectral analysis (GSA) is used as a tool to test the accuracy of numerical methods with the help of canonical problems of convection and convection-diffusion equation which…