Mapping the amplitude and frequency of pressure drop oscillations via a transient numerical model to assess their severity during microchannel flow boiling

Flow boiling in microchannel heat sinks offers effective cooling for high-power electronics devices and compact exchangers many other industrial applications. However, flow instabilities, particular pressure drop oscillations, can occur these may reduce their performance by causing premature initiation of critical flux (CHF) or deterioration the transfer coefficient. Predicting occurrence severity oscillations is hence important to ensure reliable operation. We perform stability analysis using bifurcation theory determine effect various operating geometric parameters on sinks. The identifies unstable (where occur) stable regions operation based mass flux, input, amount inlet restriction. As map does not yield information regarding region, effects amplitude period are also assessed via a transient numerical model. Surveying over region allows assessment potential reductions sink due oscillations.