DISPERSION STUDY OF HYDROGEN GAS RELEASE VIA PIPELINE NETWORK USING COMPUTATIONAL FLUID DYNAMIC APPROACH By Wan Muhammad Aizat Bin Wan Abdullah Dissertation submitted in partial fulfilment of the requirements for the Bachelor of Engineering (Hons) (Chemical Engineering) MAY 2012 Universiti Teknologi PETRONAS Bandar Seri Iskandar 31750 Tronoh Perak Darul Ridzuan