Novel Characteristics of Subsonic Coflowing Jets With Varying Lip Thickness
| Autor: | Dilip Raja Narayana, Naren Shankar Radha Krishnan |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Subsonic jet lcsh:Motor vehicles. Aeronautics. Astronautics Nozzle Aerospace Engineering Static pressure 02 engineering and technology 01 natural sciences lcsh:Technology 010305 fluids & plasmas symbols.namesake 0203 mechanical engineering 0103 physical sciences mixing enhancement Duct (flow) Coflowing jet coflowing jet static pressure Total pressure mixing inhibition Mean diameter 020301 aerospace & aeronautics Atmospheric pressure Mixing inhibition lcsh:T Mechanics Radial direction lip thickness subsonic jet Lip thickness Mach number symbols lcsh:TL1-4050 Mixing enhancement |
| Zdroj: | Journal of Aerospace Technology and Management v.12 2020 Journal of Aerospace Technology and Management Departamento de Ciência e Tecnologia Aeroespacial (DCTA) instacron:DCTA Journal of Aerospace Technology and Management, Vol 12, Iss 1, Pp 2520-2520 (2020) |
| Popis: | Effect of Mach number on coflowing jet at lip thickness of 0.2 Dp, 1.0 Dp and 1.5 Dp (where Dp is primary nozzle exit diameter, 10 mm) at Mach numbers 1.0, 0.8 and 0.6 were studied experimentally. It was found that an increase in Mach number does not have any profound effect on axial total and static pressure variation for 0.2 Dp. Decreasing the mean diameter is due to the geometrical constraints. In this study, the primary nozzle dimension and secondary duct is maintained constant for comparison. For the case of 0.2 Dp, static pressure is almost equal to atmospheric pressure for all Mach numbers. Whereas for other two lip thickness, increase in Mach number marginally influences axial total pressure and profoundly varies static pressure. It is noted that it varies considerably up to 11.1% in the axial direction and up to 17% in the radial direction for Mach number 1.0. For lower Mach numbers, such variation is not observed. Increase in Mach number increases static pressure variation in the coflowing jet flow field with lip thickness 1.0 Dp and 1.5 Dp. |
| Databáze: | OpenAIRE |
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