About
14
Publications
5,248
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
124
Citations
Introduction
Skills and Expertise
Additional affiliations
January 2007 - June 2012
Publications
Publications (14)
In this study, the capability of the present day RANS based CFD solver in predicting the characteristics of the FX 63-137 airfoil at a low Reynolds number is carried out. The Reynolds number considered in the present work varies between 0.08 to 0.2 million. Computational simulations were carried out on both sharp trailing edge and blunt trailing ed...
Experimental studies are carried out on an axisymmetric cylindrical base body for six freestream Mach numbers between 0.54 to 1.41. Unsteady pressure is measured on the base surface using high-frequency response Kulite pressure transducers. The effect of passive flow control devices on the mean base pressure and the unsteady characteristics of base...
Experiments have been conducted on a cylinder with a forward splitter plate at Reynolds number of 5.33 × 104. Ten different splitter plate configurations are considered wherein the leading edge of the splitter plate is modified. The flow development on the splitter plate and on the cylinder has been examined using PIV. Static pressure on the cylind...
An experimental study has been conducted to understand the effectiveness of passive device over base pressure region by modifying the cavity lip radius of an axisymmetric afterbody. The study has been done at both subsonic and supersonic Mach numbers. The effectiveness of the base cavity lip geometry modifications is studied using unsteady base pre...
Plug nozzle flow in the presence of external flow is experimentally investigated at free-stream Mach numbers of 0.0, 0.7, 0.9, 1.1, and 1.5. The internal nozzle is operated in overexpanded and underexpanded regimes for these external flow Mach numbers. For the subsonic external flow, slight changes in the plug jet flow are observed as compared to t...
Investigation of flow past a circular cylinder has been carried out using experimental tools at subcritical Reynolds number of 5.1×104. Pressure, hot wire and particle image velocimetry measurements have been used to understand the flow past forward splitter plate - cylinder combination. The forward splitter plate modifies the flow conditions upstr...
Experiments were carried out to understand the flow field development from a cluster linear plug nozzle. The flow field was studied with the internal nozzle operating at both overexpanded and underexpanded condition in the absence and presence of freestream flow. For all the conditions tested, jets from each of the cluster module seem to interact w...
Experiments were carried out to analyze the flow field development of a linear plug nozzle wherein the internal nozzle was operating in the overexpanded regime. Steady and unsteady pressure measurements were taken along with the schlieren and oil flow visualization techniques to describe the flow field. Over the range of pressure ratios considered,...
Four different length annular cluster truncated plug nozzle flowfields have been analyzed, using both experimental and computational tools, for pressure ratios ranging from 5 to 85, which includes the transition of an open base wake to a closed base wake. The flow expansion on the plug surface has been discussed with respect to streamwise and azimu...
Computational and experimental tools have been used to understand the linear cluster plug nozzle flowfield for a range of pressure ratios. The experimental cluster configuration is arrived at from a linear plug nozzle by introducing splitter plates in the primary nozzle, and computational analysis of corresponding geometry is also carried out. The...
The flowfields associated with truncated annular plug nozzles of varying lengths are studied both experimentally and using computational tools. The nozzles are designed to observe wake structure transition for the range of pressure ratios considered. A classification of the open wake regime is proposed for comparing and analyzing the plug flowfield...
Full-length and truncated linear plug nozzle flowfields have been analyzed, using both experimental and computational tools, for pressure ratios ranging from 5 to 72, which include the transition of an open base wake to a closed base wake. A good agreement has been found between computational and experimental results on the plug surface. Considerin...
In the development of future launch vehicles, use of plug nozzle looks promising because of its altitude adaptive capability. Unlike the conventional nozzles exhibiting relatively simple flow physics, the plug nozzles are characterized by rich flow physics involving wave interactions and base flows. A better understanding of the flow features in pl...
