V
Vaibhav Joshi
Researcher at National University of Singapore
Publications - 26
Citations - 260
Vaibhav Joshi is an academic researcher from National University of Singapore. The author has contributed to research in topics: Finite element method & Nonlinear system. The author has an hindex of 7, co-authored 18 publications receiving 138 citations. Previous affiliations of Vaibhav Joshi include Birla Institute of Technology and Science & University of British Columbia.
Papers
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Journal ArticleDOI
A positivity preserving and conservative variational scheme for phase-field modeling of two-phase flows
Vaibhav Joshi,Rajeev K. Jaiman +1 more
TL;DR: A positivity preserving variational scheme for the phase-field modeling of incompressible two-phase flows with high density ratio and a remarkable reduction of oscillations in the solution while retaining the boundedness of thephase-indicator field is presented.
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An adaptive variational procedure for the conservative and positivity preserving Allen–Cahn phase-field model
Vaibhav Joshi,Rajeev K. Jaiman +1 more
TL;DR: An adaptive variational procedure for unstructured meshes to capture fluid–fluid interfaces in two-phase flows is presented and it is demonstrated that the mesh adaptivity remarkably reduces the degrees of freedom and the computational cost by nearly half for similar accuracy.
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A variationally bounded scheme for delayed detached eddy simulation: Application to vortex-induced vibration of offshore riser
Vaibhav Joshi,Rajeev K. Jaiman +1 more
TL;DR: In this article, a bounded and positivity preserving variational (PPV) method for the turbulence transport equation of Spalart-Allmaras based delayed detached eddy simulation (DDES) is presented.
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A variational flexible multibody formulation for partitioned fluid–structure interaction: Application to bat-inspired drones and unmanned air-vehicles
TL;DR: A three-dimensional (3D) partitioned aeroelastic formulation for a flexible multibody system interacting with incompressible turbulent fluid flow and demonstrates the flow across a flexible flapping wing of a bat modeling the bone fingers as beams and the flexible membrane as thin shells in the multibODY system along with the joints.
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A positivity preserving variational method for multi-dimensional convectiondiffusionreaction equation
Vaibhav Joshi,Rajeev K. Jaiman +1 more
TL;DR: A new positivity preserving variational (PPV) procedure is proposed to solve the convectiondiffusionreaction (CDR) equation and provides a superior solution in the reaction-dominated as well as the conveyed regimes due to the minimization of spurious oscillations and accurate capturing of the high gradient regions.