39 citations · 53 across the 7 of their papers we have counts for
8 papers
Which Agent's Skill Should Change? Group-Relative Credit Assignment for Evolving Multi-Agent Teams
Yanan Ma, Yang Wang, David Le +6
Cooperative language-model agents can improve without weight updates by revising reusable skills, but only if a shared team reward is traced to the responsible agent and skill. Exi…
Simulating acoustically-actuated flows in complex microchannels using the volume penalization technique
Khemraj Gautam Kshetri, Amneet Pal Singh Bhalla, Nitesh Nama
We present a volume penalization technique for simulating acoustically-actuated flows in geometrically complex microchannels. Using a perturbation approach, the nonlinear response…
Consistent continuum equations and numerical benchmarks for a perturbation-based, variable-coefficient acoustofluidic solver
Khemraj Gautam Kshetri, Amneet Pal Singh Bhalla, Nitesh Nama
We present a consistent continuum framework and a variable-coefficient acoustofluidic solver to analyze acoustic streaming. A perturbation approach is used to split the compressibl…
A systematic comparison between Membrane, Shell, and 3D Solid formulations for non-linear vascular biomechanics
Nitesh Nama, Miquel Aguirre, Rogelio Ortigosa +3
Typical computational techniques for vascular biomechanics represent the blood vessel wall via either a membrane, a shell, or a 3D solid element. Each of these formulations has its…
A Multiscale Framework for Defining Homeostasis in Distal Vascular Trees: Applications to the Pulmonary Circulation
Vasilina Filonova, Hamidreza Gharahi, Nitesh Nama +2
Coupling hemodynamics with vessel wall growth and remodeling (G&R) is crucial for understanding pathology at distal vasculature to study progression of incurable vascular diseases,…
Numerical Considerations for Advection-Diffusion Problems in Cardiovascular Hemodynamics
Sabrina R. Lynch, Nitesh Nama, Zelu Xu +3
Numerical simulations of cardiovascular mass transport pose significant challenges due to the wide range of Péclet numbers and backflow at Neumann boundaries. In this paper we pres…
Acoustic Streaming: An Arbitrary Lagrangian-Eulerian Perspective
Nitesh Nama, Tony Jun Huang, Francesco Costanzo
We analyze acoustic streaming flows using an ALE perspective. The formulation stems from an explicit separation of time-scales resulting in two subproblems: a first-order problem,…
Investigation of acoustic streaming patterns around oscillating sharp edges
Nitesh Nama, Po-Hsun Huang, Tony Jun Huang +1
Oscillating sharp edges have been employed to achieve rapid and homogeneous mixing in microchannels using acoustic streaming. Here we use a perturbation approach to study the flow…