نتایج جستجو برای: circular convergent nozzle

تعداد نتایج: 96478  

2009
PAN LIU HAIRONG YUAN

We proved uniqueness and instability of the symmetric subsonic– sonic flow solution of the compressible potential flow equation in a surface with convergent areas of cross–sections. Such a surface may be regarded as an approximation of a two–dimensional convergent nozzle in aerodynamics. Mathematically these are uniqueness and nonexistence results of a nonlinear degenerate elliptic equation wit...

Journal: :Processes 2021

Today, the correct understanding of issue oil and water cavitation is important due to growing demands on working conditions in hydraulic systems (pressure flow rate). This article deals with measurement subsequent mathematical modeling a convergent-divergent nozzle circular cross-section. Cavitation depends physical properties flowing medium as function temperature. Usually, defined by two-pha...

2009
Qing Xiao Andrew Johnson

The compressible jet plume emerging from a planar convergent–divergent nozzle containing a separation shock is investigated experimentally and numerically. The investigation encompasses exit-to-throat area ratios (Ae=At) from 1.0 to 1.8 and nozzle pressure ratios from 1.2 to 1.8. Experiments were conducted in a variable-geometry nozzle facility, and computations solved the Reynolds-averaged Nav...

Journal: :روش های عددی در مهندسی (استقلال) 0
علی اصغر رستمی a. rostami محمدپسندیده فرد m. pasandideh fard

0

1992

A m ultiaxis thrust-vectoring nozzle designed to have equal ow-turning capability in pitch and yaw was conceived and experimentally tested for internal static performance at Langley Research Center. The cruciform-shaped, convergent-divergent nozzle turned the ow for thrust vectoring by deeecting the divergent surfaces of the nozzle, called aps. Methods for eliminating physical interference betw...

1992

A multiaxis thrust-vectoring nozzle designed to have equal ow-turning capability in pitch and yaw was conceived and experimentally tested for internal static performance at Langley Research Center. The cruciform-shaped, convergent-divergent nozzle turned the ow for thrust vectoring by deeecting the divergent surfaces of the nozzle, called aps. Methods for eliminating physical interference betwe...

Journal: :International Journal of Heat and Mass Transfer 1964

2013
R. Haoui

The aim of this work is to determine the supersonic nozzle profiles used in propulsion, for the launchers or embarked with the satellites. This design has as a role firstly, to give a important propulsion, i.e. with uniform and parallel flow at exit, secondly to find a short length profiles without modification of the flow in the nozzle. The first elaborate program is used to determine the prof...

2014
Vishal Gupta Vishnu Prasad Ruchi Khare

In Pelton turbine, the energy carried by water is converted into kinetic energy by providing nozzle at the end of penstock. The shape of jet affects the force and torque on the bucket and runner of turbine. The nozzle of circular cross section is commonly used. In this paper attempt has been made to study the effect of four different jet shapes on the flow and torque characteristics of Pelton t...

Journal: :International Journal for Research in Applied Science and Engineering Technology 2021

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