Zobrazeno 1 - 10
of 159
pro vyhledávání: '"Narasimha, Roddam"'
Autor:
Sharma, Arjun, Narasimha, Roddam
This paper describes an investigation of the possible benefits from wing optimisation in improving the performance of Micro Air Vehicles (MAVs). As an example we study the Avion (3.64 kg mass, 1.60 m span), being designed at the CSIR National Aerospa
Externí odkaz:
http://arxiv.org/abs/2409.12345
The role of instability in the growth of a 2D, temporally evolving, `turbulent' free shear layer is analyzed using vortex-gas simulations that condense all dynamics into the kinematics of the Biot-Savart relation. The initial evolution of perturbatio
Externí odkaz:
http://arxiv.org/abs/2008.06661
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 blade at a high incidence and relatively low Reynolds number(25, 000 <
Externí odkaz:
http://arxiv.org/abs/2004.10967
Autor:
Ravichandran, S., Narasimha, Roddam
We model cumulus clouds as transient diabatic plumes, and present a single-fluid formulation for the study of the dynamics of developing shallow cumulus clouds. The fluid, air, carries water vapour and liquid water as scalars that are advected with t
Externí odkaz:
http://arxiv.org/abs/2004.09631
The entrainment of ambient fluid into a turbulent shear flow has been a topic of wide interest for several decades. To estimate the entrainment of ambient fluid into turbulent jet, it is essential to define the boundary of the jet. The question arise
Externí odkaz:
http://arxiv.org/abs/2002.06201
Anomalous entrainment in cumulus clouds has been a topic of investigation over many decades in the past. Its importance stems from the fact that entrainment rate is one of the major inputs to several cumulus-parameterization schemes. Recently Narasim
Externí odkaz:
http://arxiv.org/abs/1911.10828
This investigation is based on a DNS of a steady self-preserving incompressible axisymmetric turbulent jet at a Reynolds number of 2400. The DNS data enable accurate maps of the outer irrotational flow field, and also the vorticity field in the turbu
Externí odkaz:
http://arxiv.org/abs/1907.05421
Autor:
Narasimha, Roddam, author
Publikováno v:
The Bright Dark Ages: Comparative and Connective Perspectives. 53/5:120-142
Autor:
Ranjan, Rajesh, Narasimha, Roddam
The phenomenon of relaminarization is observed in many flow situations, including that of an initially turbulent boundary layer subjected to strong favourable pressure gradients. Available turbulence models have hitherto been unsuccessful in correctl
Externí odkaz:
http://arxiv.org/abs/1701.08077
Flow past a low pressure turbine blade in a cascade at $Re \approx 52000$ and angle of incidence $\alpha = 45.5^{0}$ is solved using a code developed in-house for solving 3D compressible Navier-Stokes equations. This code, named ANUROOP, has been dev
Externí odkaz:
http://arxiv.org/abs/1611.09746