CFD ANALYSIS OF CD NOZZLE AND EFFECT OF NOZZLE PRESSURE RATIO ON PRESSURE AND VELOCITY FOR SUDDENLY EXPANDED FLOWS
Journal Title: International Journal of Mechanical and Production Engineering Research and Development (IJMPERD ) - Year 2018, Vol 8, Issue 3
Abstract
A numerical work was carried out to study the effectiveness of micro-jets to control base pressure in suddenly expanded two-dimensional planar duct. Two micro-jets of 1 mm orifice diameter located at 90° intervals along a pitch circle distance of 1.5 times the nozzle exit diameter in the base region were employed as active controls. The calibrated Mach numbers at the entry to suddenly expanded duct was 1.87. The length-to-diameter ratio (L/D) of suddenly expanded duct was 10. Nozzles generating the calibrated Mach numbers were operated with nozzle pressure ratio (NPR) 3, 5, 7, 9 and 11. From the present investigation it is evident that for a given Mach number and effect of NPR will result in maximum increase/decrease of pressure and velocity. The convergent-divergent nozzle geometry has been modelled and simulated employing turbulence models: K-ε standard wall function turbulence model from the code was independently checked with the commercial computational fluid dynamics.
Authors and Affiliations
Keywords
Related Articles
- EP ID EP377259
- DOI -
- Views 104
- Downloads 0
Policies for Sustainable Manufacturing and Extended Producer Responsibility for Green And Sustainable Manufacturing in India – A Review
Sustainable Business is the need of the hour. This paper is an attempt to review the practices of sustainable manufacturing though innovative design and engineering attempts from the end of producers, shift of consumers...
COMPARISON OF ABLATION RESISTANCE AND THERMAL CONDUCTIVITY OF C-PH AND CNT COMPOSITE LAMINATES
Supersonic aerospace vehicles which operate at very high speeds are supposed to sustain lots of heat due to skin friction. There is always a need for materials which are light in weight and show excellent thermal resista...
Calculating Optimum Gear Ratios of Mechanical Driven Systems Using Three Step Bevel Helical Gearbox and Chain Drive for Minimum System Height
The current study is aimed at determining optimum gear ratios of mechanical driven systems using a three-step bevel helical gearbox and a chain drive. An optimization problem with the objective function as the minimum ge...
Fluid-Structure Interaction Analysis on Horizontal Wind Turbine Blade
The research and advancements in green-energy industries like wind energy system technology has gained an increased interest in twenty-first century due to the reduction of natural resources and thus requires the standar...
The Longitudinal Strength Analysis of Aquaculture Floating Structure in Indonesia Sea Water
ABSTRACT The innovation of aquaculture floating structure is developing in the country, where the maritime sector is the potential aspect to improve the country revenue. The design of the aquaculture facility needs to be...