Numerical analysis of micro-pin-fin heat sink cooling in the mainboard chip of a CPU S. Bhattacharyya, Basma Souayeh, A. Banerjee, R. Sarkar, Mohammad Rahimi-Gorji and Hoang Minh Nguyen Eur. Phys. J. Plus, 135 5 (2020) 432 Published online: 25 May 2020 DOI: 10.1140/epjp/s13360-020-00359-y