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Bernoulli's Equation for Flow Normal to a Streamline

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Design and Optimization Strategies of a High-Performance Vented Box

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Published on: June 9, 2023

Optimization on Secondary Flow and Auxiliary Entrainment Inlets of an Ejector by Using Three-Dimensional Numerical

Jia Yan¹, Jing Jiang², Zheng Wang¹

¹School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang 621010, China.

Entropy (Basel, Switzerland)

|September 23, 2022

Summary

This summary is machine-generated.

Optimizing ejector design with auxiliary entrainment significantly boosts performance. Three-dimensional simulations reveal key geometric factors for enhanced entrainment ratio (ER).

Keywords:

auxiliary entrainment ejector multi-evaporator refrigeration system secondary flow three-dimensional

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Area of Science:

Fluid dynamics
Thermodynamics
Mechanical engineering

Background:

Ejector performance optimization is crucial for various engineering applications.
Understanding the impact of geometric parameters on ejector efficiency is essential.

Purpose of the Study:

To optimize the secondary flow inlet and introduce an auxiliary entrainment for improved ejector performance.
To investigate the influence of geometric parameters of the auxiliary entrainment inlet on the ejector's entrainment ratio (ER).

Main Methods:

Three-dimensional numerical simulations were employed.
Optimization of secondary flow inlet geometry (area, angle).
Optimization of auxiliary entrainment inlet geometry (position, area, angle).

Main Results:

Vertical secondary flow orientation showed slightly better performance than parallel.
Secondary flow inlet area significantly impacts ER up to a certain threshold.
Auxiliary entrainment inlet optimization increased ER by 97.7% through key geometric adjustments.
Auxiliary entrainment optimization had a more substantial effect than secondary flow inlet optimization.

Conclusions:

Auxiliary entrainment is a highly effective strategy for enhancing ejector performance.
Geometric optimization of the auxiliary entrainment inlet is critical for maximizing ejector efficiency.
This study provides novel insights into auxiliary entrainment effects using 3D simulations.