Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Linear underlying hypothesis based wall surface heat flow density measuring method and device

A technology of heat flux density and measurement method, which is applied in measuring devices, measuring heat, calorimeters, etc., and can solve the problems of complicated, inaccurate, and not easy to implement heat flux density measurement.

Active Publication Date: 2019-09-20
BEIHANG UNIV
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problem that the measurement of the heat flux density on the wall surface of the turbomachinery rotating channel is complicated, not easy to implement, and not accurate enough, an embodiment of the present disclosure provides a method and device for measuring the wall surface heat flux density based on the assumption of a linear bottom layer. Parallel boundary layer hot wire probe, stepper motor displacement mechanism, small CTA module, small digital-to-analog conversion module, slip ring lead and computer to measure the boundary layer velocity and temperature under rotating conditions, and finally pass the linear bottom layer assumption and turbulence standard Verification of temperature wall ratio, calculation of wall heat flux, with measurement accuracy and ease of use

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
  • Linear underlying hypothesis based wall surface heat flow density measuring method and device
  • Linear underlying hypothesis based wall surface heat flow density measuring method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0021] In the following introduction, the terms "first" and "second" are only used for the purpose of description, and should not be understood as indicating or implying relative importance. The following introduction provides multiple embodiments of the present disclosure, and different embodiments can be replaced or combined and combined, so the application can also be considered to include all possible combinations of the same and / or different embodiments described. Thus, if one embodiment contains features A, B, C, and another embodiment contains features B, D, then the application should also be considered to include all other possible combinations containing one or more of A, B, C, D Although this embodiment may not be clearly written in the following content.

[0022] In order to make the purpose, technical solution and advantages of...

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 linear underlying hypothesis based wall surface heat flow density measuring method. Two paths of hot line probes with parallel boundary layers, a stepping motor displacement mechanism, a mini CTA module, a mini digital to analog conversion module, a slip ring power initiator and a computer are used in the method, the speed and temperature of the lower boundary layer under the rotation condition are measured, and the wall surface heat flow density is calculated via linear underlying hypothesis and verification of the turbulent flow standard temperature wall surface rate. Measurement is accurate and easy. The invention also discloses a linear underlying hypothesis based wall surface heat flow density measuring device.

Description

technical field [0001] The disclosure relates to the technical field of velocity and temperature measurement in a boundary layer near a wall of a turbomachinery rotating channel, in particular to a method and device for measuring wall heat flux density based on a linear bottom layer assumption. Background technique [0002] In the heat transfer research of rotating machinery, the wall heat flux density or the wall heat flow per unit area is a very important parameter. Under conventional static conditions, due to the large installation space, the wall heat flow measurement structure can be designed very complicated, so many methods are used. This method is used to realize the measurement. The common idea is to use the voltage and resistance of the heating device to calculate the heat production per unit time, and then use the temperature sensor to measure the heat dissipation per unit time when the wall faces outside the channel, and subtract it to obtain the heat flow in the ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G01K17/08
CPCG01K17/08
Inventor 由儒全李海旺李刚夫陶智
Owner BEIHANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com