A Comparative Evaluation of Combustion Characteristics of Strut and Wall Injection Technique in a Cavity-Based Scramjet Combustor

2020 ◽  
pp. 823-833
Author(s):  
Lakka Suneetha ◽  
Pitambar R. Randive ◽  
Krishna Murari Pandey
Keyword(s):  
Comparative Evaluation ◽  
Combustion Characteristics ◽  
Injection Technique ◽  
Scramjet Combustor ◽  
Wall Injection

Comparative Evaluation of Ethanol, n-Butanol, and Diethyl Ether Effects as Biofuel Supplements on Combustion Characteristics, Cyclic Variations, and Emissions Balance in Light-Duty Diesel Engine

2017 ◽  
Vol 143 (2) ◽  
pp. 04016044 ◽  
Author(s):  
Dimitrios C. Rakopoulos ◽  
Constantine D. Rakopoulos ◽  
Evangelos G. Giakoumis ◽  
Neofytos P. Komninos ◽  
George M. Kosmadakis ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Diethyl Ether ◽  
Comparative Evaluation ◽  
Combustion Characteristics ◽  
Light Duty ◽  
Cyclic Variations

A COMPARATIVE EVALUATION OF THE JET INJECTION TECHNIQUE (HYPOSPRAY) AND THE HYPODERMIC NEEDLE FOR THE PARENTERAL ADMINISTRATION OF DRUGS

1962 ◽  
Vol 244 (4) ◽  
pp. 54/418-56/420 ◽  
Author(s):  
Austin H. Kutscher ◽  
George A. Hyman ◽  
Edward V. Zegarelli ◽  
J. Dekis ◽  
John D. Piro
Keyword(s):  
Comparative Evaluation ◽  
Parenteral Administration ◽  
Hypodermic Needle ◽  
Injection Technique ◽  
Jet Injection

130. A comparative evaluation of the jet injection technique (Hypospray) and the hypodermic needle for the paren-teral administration of drugs

1963 ◽  
Vol 12 (4) ◽  
pp. 261
Author(s):  
AUSTIN H. KUTSCIIER ◽  
GEORGE A. HYJIAN ◽  
EDWARD V. ZEGARELLI ◽  
J. DEKIS. ◽  
JOHN D. PIRO ◽  
...  
Keyword(s):  
Comparative Evaluation ◽  
Hypodermic Needle ◽  
Injection Technique ◽  
Jet Injection

Numerical investigation on implication of innovative hydrogen strut injector on performance and combustion characteristics in a scramjet combustor

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Sribhashyam Krishna Kireeti ◽  
Gadepalli Ravikiran Sastry ◽  
Santosh Kumar Gugulothu
Keyword(s):  
Transport Model ◽  
Weight Ratio ◽  
Combustion Efficiency ◽  
Navier Stokes ◽  
Mixing Efficiency ◽  
Injection Technique ◽  
Mixing Rate ◽  
Navier Stokes Equation ◽  
Ansys Fluent ◽  
Scramjet Combustor

Abstract A detailed numerical analysis on a scramjet combustor is carried out by introducing an innovative shaped strut in place of the conventional strut. The design of newly added strut aids in generating intense vorticity which helps in efficient mixing of fuel and oxidizer. The air from the isolator enters the combustor at Mach 2.0, whereas fuel enters from the trailing edge of the strut sonically. In this study the flow dynamics with finite volume approach on commercial software Ansys-Fluent 20.0 to solve the two-dimensional Reynolds average Navier Stokes equation (RANS) with compressible fluid flow by considering the density-based solver with SST k-ε turbulent model. The species transport model with volumetric reaction and finite rate/eddy dissipation turbulence chemistry interaction is adopted to study the combustion phenomena and validated with the experimental results, and it is found that the interaction of the shear shock layer enhances the mixing rate by intensifying turbulence. The modified strut injector’s mixing efficiency is compared to the base strut and observed that with a 40% reduction in length, the modified strut injection technique exhibited a mixing efficiency of >95%. The combustion efficiency is then estimated streamwise, and the plot follows the same pattern as the mixing efficiency with fuel burns down completely when x = 150 mm for the modified strut whereas x = 200 mm for the base strut. This can compact the combustion chamber and increases the thrust-to-weight ratio. So, the innovative strut adopted can improvise the combustion efficiency.

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