Dr.P.S.V. Ramana Rao - Academia.edu (original) (raw)
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Mehran University of Engineering and Technology
Birla Institute of Technology and Sciences (BITS-Pilani), Hyderabad Campus
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Papers by Dr.P.S.V. Ramana Rao
4Aditya Institute for Technology and Management Tekkali, India 532 201 Received 08 April 2011; re... more 4Aditya Institute for Technology and Management Tekkali, India 532 201 Received 08 April 2011; revised 27 October 2011; accepted 15 November 2011 This study presents effect of engine performance, exhaust emissions and combustion characteristics of a single cylinder laboratory based four stroke cycle direct injection (DI) diesel engine fueled by neat coconut oil methyl ester (COME) injected through conventional nozzle (injection pressure 200 bar) and a separate electronic injector is used as retrofit to inject methanol (injection pressure 3 bar) at an appropriate time at suction end after complete opening of suction valve. Tests were conducted at five different loads at rated speed of 1500 rpm. With increase in methanol%, pressure variation increases per degree of crank revolution with progressively increasing delay periods. Biodiesel with 5% methanol injection produced better diffused combustion and a good share of heat release was observed in premixed and diffused combustion zones,...
Journal of Nanomaterials
One of the most former and widely utilized unconventional machining is known as the process of el... more One of the most former and widely utilized unconventional machining is known as the process of electric discharge machining (EDM). This is a procedure, where a serialized set of electric discharges are applied to eliminate the material from a workpiece (i.e., electrically conductive). This article proposes a bi-objective optimization of process arguments in machining of stainless steel of 630 (SS630) grade using both experimentation and thermal investigation. Here, flushing pressure ( P F ), pulse on-time ( T ON ), peak current ( I p ), and pulse off-time ( T OFF ) are assumed as the input process parameters to conduct a series of experiments on die-sinking EDM (DS-EDM) of SS630 to predict the output characteristics of machining optimization using grey relation analysis (GRA). Both material removal rate (MRR) and surface roughness (SR) are used for evaluating the output response obtained using the machining performance. In addition, thermal investigation is performed using finite el...
4Aditya Institute for Technology and Management Tekkali, India 532 201 Received 08 April 2011; re... more 4Aditya Institute for Technology and Management Tekkali, India 532 201 Received 08 April 2011; revised 27 October 2011; accepted 15 November 2011 This study presents effect of engine performance, exhaust emissions and combustion characteristics of a single cylinder laboratory based four stroke cycle direct injection (DI) diesel engine fueled by neat coconut oil methyl ester (COME) injected through conventional nozzle (injection pressure 200 bar) and a separate electronic injector is used as retrofit to inject methanol (injection pressure 3 bar) at an appropriate time at suction end after complete opening of suction valve. Tests were conducted at five different loads at rated speed of 1500 rpm. With increase in methanol%, pressure variation increases per degree of crank revolution with progressively increasing delay periods. Biodiesel with 5% methanol injection produced better diffused combustion and a good share of heat release was observed in premixed and diffused combustion zones,...
Journal of Nanomaterials
One of the most former and widely utilized unconventional machining is known as the process of el... more One of the most former and widely utilized unconventional machining is known as the process of electric discharge machining (EDM). This is a procedure, where a serialized set of electric discharges are applied to eliminate the material from a workpiece (i.e., electrically conductive). This article proposes a bi-objective optimization of process arguments in machining of stainless steel of 630 (SS630) grade using both experimentation and thermal investigation. Here, flushing pressure ( P F ), pulse on-time ( T ON ), peak current ( I p ), and pulse off-time ( T OFF ) are assumed as the input process parameters to conduct a series of experiments on die-sinking EDM (DS-EDM) of SS630 to predict the output characteristics of machining optimization using grey relation analysis (GRA). Both material removal rate (MRR) and surface roughness (SR) are used for evaluating the output response obtained using the machining performance. In addition, thermal investigation is performed using finite el...