Fani Mifiantika. DESIGN AND SIMULATION OF HEATPIPES WITH SINKS USING CFD IN THE PROCESS OF THERMAL NATURAL COOLING PERFORMANCE ON TRAINS: DESAIN DAN SIMULASI HEATPIPE WITH SINK MENGGUNAKAN CFD DALAM PROSES KINERJA THERMAL NATURAL COOLING PADA KERETA API. J-MEEG 2024, 3, 330-336.