Browsing by Author "Sarma, P. K."

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An approach to investigate the characteristics of high speed turbo machines
(International Journal of Heat and Technology, 2013-12) Sarma, P. K.; Satyanarayana Murthy, Y. V. V.; Srihari, Reddipalli.; Chada, Kedarnath.; Ramnarayanan, C. P.
The article proposes a method to investigate some of the essential characteristics of high speed rotating machinery. The underlying principle of power versus speed dependence of a rotating machine is defined by a second order differential equation with dependent and independent variables respectively as power and speed. The solution of such an equation together with the dynamic relation of flow of the medium would enable further to generate the essential characteristics specific power of the compressible medium of the turbo machine under consideration.
Design of muffler for A low powered gas turbine exhaust system
(International Journal of Heat and Technology, 2012-06) Sarma, P. K.; Ghosh, Rajesh.; Satyanarayana Murthy, Y. V. V.; DharmaRao, V.
The report contains the design of the muffler to be installed in the stack of chimney for low powered 10 megawatt gas turbine. The parameters pressure and temperature of the exhaust gas are to be gradually reduced in three successive modules with the energy considerations. The design is accomplished for a range of possible magnitudes of friction coefficients for the gas expanding through perforations. Besides, based on the results of computations drawings are provided with the aid of auto cad for manufacturing and fabrication purposes.
Wake analysis from the first principles of hydrodynamics
(International Journal of Heat and Technology, 2014-12) Sarma, P. K.; Satyanarayana Murthy, Y. V. V.; Timmaraju, M.; Radhika, Y.; Rajeswara, Reddy.; Ramanarayanan, C. P.
The theoretical approach presents the dynamics of the wake under ideal conditions free from cavitations and boundary layer separation effects in the stern region during cruise of a ship. Principles of conservation of momentum and kinetic energy are considered in the formulation. The power rating of the propeller is found to be the dominant parameter determining the active length of the wake for the range 2x106 W< POWER < 15X106 W. However, the profile of the wake is uniquely considered independent of the power of the propeller. The assumption such as a logarithmic variation of the profile of the wake can be altered by any of the suitable functional relationship depending on aerial observations and the data.