Measurement apparatus and method for rectangular narrow-gap flow boiling
By introducing a micro-heater array and a synchrotron X-ray measurement device into the rectangular narrow slit flow boiling experiment, local heating and temperature measurement were integrated and non-invasively visualized. This solved the problem of high-precision and fast-response local heat flow control and observation inside the narrow slit, which is difficult to achieve in the existing technology. It enabled the simultaneous measurement of bubble nucleation, growth, detachment and slip, and provided high-resolution coupled information of vapor-liquid two-phase flow and temperature field, thus reversing the bubble dynamics.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANGHAI JIAOTONG UNIV
- Filing Date
- 2026-05-29
- Publication Date
- 2026-07-17
AI Technical Summary
Existing experimental methods are insufficient to achieve high-precision, rapid-response local heat flux control and continuous temperature measurement in rectangular narrow-slit flow boiling. Furthermore, conventional visualization methods are insufficient to achieve high-resolution, non-invasive observation of vapor-liquid two-phase flow within the narrow slit. The lack of a unified time reference and correlation analysis methods makes it difficult to accurately obtain the relationship between bubble dynamics and local temperature response.
A micro-heater array and a synchrotron X-ray measurement device are used. The micro-heater array is used for integrated local heating and temperature measurement, and the synchrotron X-ray is used for non-invasive visualization. The correspondence between bubble dynamics and temperature response is obtained through a unified time reference and correlation analysis method.
It achieves synchronization of heating and temperature measurement during narrow-slit flow boiling, obtains high-resolution coupled information of the vapor-liquid two-phase flow structure and wall temperature field, improves measurement accuracy and response speed, and can invert the bubble nucleation location, movement path and propagation speed.
Smart Images
Figure CN122409737A_ABST