Email Document Reference

Enter your email address below and the reference for this document will be sent to shortly from webmaster@ceesi.com.

Title: Hoking Pressure Ratio Guidelines For Critical Flow Venturis And The Study Of Diffuser Pressure Distribution
Author: Michael S. Carter Bradford W. Sims Robert J. Mckee
Source: 2015 International Symposium on Fluid Flow Measurement
Year Published: 2015
Abstract: he ratio of maximum exit pressure to inlet pressure that maintains sonic velocity at the throat of a Critical Flow Venturi (CFV) is referred to as the Maximum Back Pressur e Ratio (MBPR). Current standards provide MBPR equations for CFVs operated at throat Reynolds Numbers (Re d ) above 200,000 and previous research has provided a MBPR equation for specific diffuser geometries down to a Re d of 12,000 and at inlet pressures of 100 and 150 kPa. This paper will present unchoking test results for additional inlet pressures ranges and provide MBPR guidelines for s pecific diffuser geometries operated from 20 to 500 kPa. Thi s previous research also demonstrated that CF Vs with lon g er diffuser s were less susceptible to Diffuser Performance Inversion, DPI, or what has previously been known as premature unchoking. This paper will present testing and analysis regarding DPI, optimal diffuser length, diffuser pressure stab ility , and the effects of a small diffuser step downstream of the CFV throat.

In order to prevent spam and automated file downloads for documents within the Measurement Library, please follow the instructions below and then you will be able to email a reference to this article.