Numerical study on effect of operating pressures on CRKEC-based two-stage ejector

• Autorzy: Kumar Virendra , Yadav Surendra Kumar , Kumar Anil , Singh Nishant Kumar , Prasad Lalta

Identyfikatory

DOI

10.24425/ather.2024.150448

• Języki publikacji: EN

Abstrakty

EN

The two-stage ejector mixing-diffuser section in this study was computed using the Redlich-Kwong equation of state. The ejector was designed based on the constant rate of kinetic energy change (CRKEC) approach. The water vapor mixing diffuser profile and flow properties were calculated using a one-dimensional gas dynamic model. For the numerical investigation, the estimated geometrical profile based on the input design and operating conditions was utilized. ANSYS-Fluent 14.0 was employed for the numerical study. The analysis was conducted under both on-design and off-design scenarios using the standard k-ε turbulence model. The impact of operating factors on flow behavior and entrainment ratios was investigated at off-design conditions. The findings demonstrated that the operational total pressures of the primary, secondary, and exit flows are a function of the two-stage ejector (TSE) entrainment ratio. With a higher exit pressure and more secondary/entrained flows, the entrainment ratio increases. However, altering the primary flow pressure in ways other than for the design conditions reduces the entrainment ratio.

Słowa kluczowe

EN

ejector; constant rate of kinetic energy change; CRKEC; two-stage ejector; TSE; jet-pump; mixing-diffuser

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2024
• Tom: Vol. 45, no 1
• Strony: 155--164
• Opis fizyczny: Bibliogr. 30 poz., rys.

Twórcy

autor

Kumar Virendra

• Department of Mechanical Engineering. Harcourt Butler technical University, Kanpur 208002, India

autor

Yadav Surendra Kumar

• bDepartment of Mechanical Engineering. K R Mangalam University, Gurugram 122001, India

autor

Kumar Anil

• Department of Mechanical Engineeringg. KNIT, Sultanpur 228118, India

autor

Singh Nishant Kumar

• Department of Mechanical Engineering. Harcourt Butler technical University, Kanpur 208002, India

autor

Prasad Lalta

• Department of Mechanical Engg. NIT, Uttrakhand 246174, India

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