High speed droplet/wall surface liquid film oblique impact test device

A collision test and small droplet technology, which is applied in measuring devices, fluid dynamics tests, machine/structural component testing, etc., can solve the problems of small droplet collision speed, unadjustable droplet incident angle, large diameter, etc.

Inactive Publication Date: 2016-11-09
NORTHWESTERN POLYTECHNICAL UNIV
View PDF7 Cites 25 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the test device in this paper, the droplet incident angle cannot be adjusted, and the droplet collision velocity produced by the test device is too small and the diameter is too large, which is quite different from the actual working conditions of high-speed small oil droplets in the bearing cavity ; In addition, bec

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High speed droplet/wall surface liquid film oblique impact test device
  • High speed droplet/wall surface liquid film oblique impact test device
  • High speed droplet/wall surface liquid film oblique impact test device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0098] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0099] In describing the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation indicated by rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a high speed droplet/wall surface liquid film oblique impact test device. The test device comprises a high speed droplet oblique injection device, a liquid film generation device, a gas feeding system, a liquid feeding system and a shooting system. A droplet end cover is replaced and the pressure and pulse length of pulse compression gas entering a cavity are adjusted to generate droplets with different diameters; the air flow entering a droplet acceleration part coated with a super-hydrophobic oleophobic material coating is changed to change the injection speed of the droplets; a droplet injection angle adjusting part is rotated to change the injection angle of the droplets; the liquid feeding amount of the liquid feeding system is changed to change the speed of a liquid film in a liquid film flowing groove; and the height difference between a liquid film thickness adjusting part and the liquid surface of the liquid film flowing groove is adjusted to change the thickness of the liquid film. According to the invention, the influences of the diameter, speed, injection angle, liquid film thickness and liquid film speed of the high speed droplets on the oblique impact state of the high speed droplets/wall surface liquid films can be observed, and the splashing critical condition in the oblique impact process of the high speed droplets/wall surface liquid films is determined.

Description

technical field [0001] The invention relates to a test device, in particular to a high-speed small droplet / wall liquid film oblique collision test device. Background technique [0002] The bearing cavity is an important lubricating part in an aero-engine. The lubricating oil in the bearing cavity is thrown out by the high-speed rotating parts of the bearing and then broken into small high-speed oil droplets. These high-speed small oil droplets of different sizes meet the bearing cavity at different incident angles. After the wall collides, deposits or splashes occur, and finally form the wall oil film and secondary oil droplets. The wall oil film flows along the wall of the bearing cavity and is discharged from the oil discharge port to realize the function of circulating heat dissipation, while the secondary oil droplets flow from the vent port along with the gaseous medium. discharge. As a component of the study of complex oil-gas two-phase flow in the bearing cavity, det...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01M10/00
CPCG01M10/00
Inventor 陈国定方龙李建华
Owner NORTHWESTERN POLYTECHNICAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap