Related Experiment Video
Updated: Jan 29, 2026
08:25
Measurements of Local Instantaneous Convective Heat Transfer in a Pipe - Single and Two-phase Flow
Published on: April 30, 2018
7.6K
Experimental Research Progress on Gas-Liquid Flow and Heat Transfer Characteristics in Micro Pulsating Heat Pipes
Jun Chen1, Hao Tian1, Wanli Xu1
1School of Petroleum and Natural Gas Engineering, School of Energy, Changzhou University, Changzhou 213164, China.
Micromachines
|January 28, 2026
Summary
Micro pulsating heat pipes (MPHPs) offer effective thermal management for electronics. This review clarifies their complex two-phase flow and heat transfer mechanisms for optimized cooling device design.
Area of Science:
- * Thermal management in microelectronics.
- * Two-phase flow and heat transfer.
- * Micro pulsating heat pipes (MPHPs).
Background:
- * Increasing power density in microelectronics necessitates advanced thermal management.
- * Micro pulsating heat pipes (MPHPs) present advantages over microchannel and thermoelectric cooling.
- * Micro-scale effects (scale, wall, interfacial) introduce complexity in MPHPs.
Purpose of the Study:
- * To review experimental research on micro pulsating heat pipes (MPHPs).
- * To clarify the mechanisms of gas-liquid two-phase flow and heat/mass transfer in MPHPs.
- * To provide theoretical support for optimizing MPHP cooling device design.
Main Methods:
- * Comprehensive review of existing experimental studies on MPHPs.
- * Analysis of MPHP definition, energy transmission, and structural features.
- * Examination of two-phase working fluid motion states and flow patterns.
- * Evaluation of thermal performance variations and influencing factors.
Main Results:
- * Detailed examination of gas-liquid two-phase flow patterns and evolution mechanisms within MPHPs.
- * Identification of key factors influencing MPHP thermal performance.
- * Understanding of scale, wall, and interfacial effects on heat transfer characteristics.
Conclusions:
- * MPHPs show significant potential for advanced thermal management.
- * Further experimental investigation is crucial for understanding complex flow and heat transfer.
- * This review provides a foundation for optimizing MPHP design and application.
More Related Videos
Related Concept Videos
01:22General Characteristics of Pipe Flow I
1.7K
Pipe flow refers to the movement of fluids within fully enclosed conduits, typically cylindrical in shape, such as water pipes or hydraulic hoses. These conduits are designed to withstand high-pressure gradients that drive fluid movement, contrasting with open-channel flows, where gravity is the primary driving force. Rectangular conduits, like air conditioning and heating ducts, generally operate at lower pressures and are less suited for high-pressure applications.
The classification of fluid...
The classification of fluid...
1.7K
01:12Heat Flow and Specific Heat
6.8K
Heat is a type of energy transfer that is caused by a temperature difference, and it can change the temperature of an object. Since heat is a form of energy, its SI unit is the joule (J). Another common unit of energy often used for heat is the calorie (cal), which is defined as the energy needed to change the temperature of 1 g of water by 1 °C, specifically between 14.5 °C and 15.5 °C, since the energy needed shows a slight temperature dependence. Another commonly used unit is...
6.8K
01:24General Characteristics of Pipe Flow II
1.6K
When fluid enters a pipe, it first passes through the entrance region, where the velocity profile adjusts due to viscous effects. In this region, a boundary layer forms along the pipe walls and grows until it fully occupies the pipe's cross-section. Once the boundary layer merges, the flow becomes fully developed, with a steady velocity profile that remains consistent along the pipe's length.
The distance to reach a fully developed flow is called the entrance length and depends on the...
The distance to reach a fully developed flow is called the entrance length and depends on the...
1.6K
01:19Mechanism of heat transfer
1.9K
Understanding heat transfer mechanisms is essential for understanding how our bodies maintain balance in different environmental conditions. When the environment is thermoneutral, the body is in a state of balance, neither using nor releasing energy to maintain its core temperature. However, when the environment is not thermoneutral, the body employs four heat transfer mechanisms to maintain homeostasis: conduction, convection, evaporation, and radiation. These mechanisms facilitate heat...
1.9K
01:14Mechanisms of Heat Transfer I
6.2K
Just as interesting as the effects of heat transfer on a system are the methods by which the heat transfer occur. Whenever there is a temperature difference, heat transfer occurs. It may occur rapidly, such as through a cooking pan, or slowly, such as through the walls of a picnic ice box. So many processes involve heat transfer that it is hard to imagine a situation where no heat transfer occurs. Yet, every heat transfer takes place by only three methods: conduction, convection, and radiation.
6.2K
01:20Mechanisms of Heat Transfer II
4.5K
In convection, thermal energy is carried by the large-scale flow of matter. Ocean currents and large-scale atmospheric circulation, which result from the buoyancy of warm air and water, transfer hot air from the tropics toward the poles and cold air from the poles toward the tropics. The Earth’s rotation interacts with those flows, causing the observed eastward flow of air in the temperate zones. Convection dominates heat transfer by air, and the amount of available space for the airflow...
4.5K