A Statistical Analysis of Temperature Oscillations on a Flat-plate Oscillating Heat Pipe With Tesla-type Check Valves
Year: 2012
Type: article
Abstract: Steady-state, oscillatory temperature signals occurring on the wall of two flat-plate oscillating heat pipes (FP-OHP)one with Tesla-type check valves (TV FP-OHP) and another withoutwere analyzed using statistical methods in order to quantify and determine oscillating behavior associated with flow rectification.Using the Expectation-Maximization algorithm, a probability density function (PDF) governing the temperature signal was found to be multi-Gaussian and dependent on heat input and heat pipe region for both FP-OHPs investigated.Results further indicate that the inherent flow rectification within the TV FP-OHP provides for an evaporator temperature signal with a less heat-dependent, higher-kurtosis PDF and, at higher heat inputs, a higher: Pearson correlation coefficient and Shannon entropy.These results provide a unique means to quantify the pseudo-random feature of oscillatory temperature occurring on an OHP.
Source: Frontiers in Heat Pipes
Authors: H.B. Ma, Scott Thompson
Institution: University of Missouri
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $275
Funder: Office of Naval Research
Awards: G2169423495, G8876996369
OpenAlex ID: W1968601301