Characterisation of turbulence at sites with coexisting waves and currents: An analysis by empirical mode decomposition

T Tan, V Venugopal - Ocean Engineering, 2024 - Elsevier
This paper presents a novel side information assisted Empirical Mode Decomposition (EMD)
method for separating wave orbital velocity from a combined wave-tidal current velocity data …

Experimental investigation of the cavitation control in a convergent–divergent nozzle using air injection

SK Singh, PS Duth, P Kumar, E Kadivar… - Physics of Fluids, 2024 - pubs.aip.org
Detailed investigation of cavitation dynamics in a converging–diverging nozzle using air
injection at different injection positions is carried out. Air is injected at upstream and …

Turbulence anisotropy with higher-order moments in flow through passive grid under rigid boundary influence

PK Raushan, SK Singh… - Proceedings of the …, 2021 - journals.sagepub.com
The investigation presents the estimate of the degree of deviation from the isotropic
turbulence in terms of Reynolds stress tensor for grid generated turbulence under the …

Anisotropy of reynolds stress tensor in combined wave–current flow

SK Singh, PK Raushan… - Journal of …, 2021 - asmedigitalcollection.asme.org
This study examines the turbulent stress anisotropy tensor based on the Lumley triangle
technique and eigenvalues in wave–current combined flows. The invariant functions are …

Organized structure of turbulence in wave-current combined flow over rough surface using spatio-temporal averaging approach

A Paul, PK Raushan, SK Singh, K Debnath - Journal of the Brazilian …, 2020 - Springer
The present study experimentally investigated near-bed coherent structures of turbulence
over rough surface in the presence of surface waves over the steady current by replicating it …

Near bed flow characteristics over the patch and non-patch zone due to pure wave

S Sarkar, K Debnath, SK Singh - Ships and Offshore Structures, 2023 - Taylor & Francis
An experimental study was conducted in a laboratory flume to investigate various velocities
and turbulent characteristics over the patch and the non-patch zones for a sand bed under …

Spatial variation of mean flow and turbulence characteristics within channel contraction–an experimental approach

SK Singh, V Das, S Chaudhuri… - ISH Journal of Hydraulic …, 2023 - Taylor & Francis
The influence of three different channel contractions on the mean flow and turbulent
characteristics has been measured experimentally in a recirculating flume. The velocity …

Regular wave and turbulent current interaction in free surface flow

SK Singh, K Debnath - Journal of Ocean Engineering and Marine Energy, 2022 - Springer
Experimental investigation of a mechanically generated regular surface wave over turbulent
current is carried out to understand the role of surface wave in combined flow. The recorded …