Open Access

ARTICLE

Experimental Study on the Flow Characteristics of a Plate with a Mechanically Choked Orifice

Ming Liu^1,2,3, Xingkai Zhang^1,4, Dong Wang^1,*

1 State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an, 710049, China
2 Petroleum Engineering Technology Research Institute of Shengli Oilfield Company, SINOPEC, Dongying, 257000, China
3 Shandong Key Laboratory of Heavy Oil Production Technology, Shengli Oilfield Company, SINOPEC, Dongying, 257000, China
4 Petroleum Engineering College, Yangtze University, Wuhan, 430100, China

* Corresponding Author: Dong Wang. Email:

Fluid Dynamics & Materials Processing 2021, 17(1), 97-107. https://doi.org/10.32604/fdmp.2021.011292

Received 30 April 2020; Accepted 10 November 2020; Issue published 09 February 2021

Abstract

The mechanically choked orifice plate (MCOP) is a new type of device for flow control by which choking conditions for incompressible fluids can be obtained with relatively small pressure losses. Given the lack of relevant results and data in the literature, in the present study, we concentrate on the experimental determination of the flow coefficient for the annular orifice, the pressure distribution in the MCOP, and the characteristics of the choked flow itself. As confirmed by the experimental results, the Reynolds number, the orifice plate thickness, the plug taper, and the eccentricity have an obvious influence on the aforementioned flow coefficient. The pressure drop in the MCOP is mainly generated near the orifice plate, and the pressure upstream of the orifice plate is slightly reduced in the flow direction, while the pressure downstream of the orifice plate displays a recovery trend. The choked flow rate of the MCOP can be adjusted by replacing the spring with a maximum flow control deviation of 4.91%.

---

Keywords

---