▁includes ▁the ▁P PT ▁( Ph an - Th ien ▁– ▁T anner ) ▁model ▁for ▁vis co el astic ▁fluid ▁( 1 0 8 4 ▁cit ations ) ▁and ▁its ▁variant ▁( 4 6 9 ▁cit ations ). ▁He ▁is ▁the ▁author ▁and ▁co - author ▁of ▁several ▁books ▁in ▁r he ology ▁ ▁Education ▁Ph an - Th ien ▁graduated ▁from ▁the ▁University ▁of ▁Sydney , ▁Sydney ▁Australia , ▁with ▁a ▁B Eng ▁( M ech . ▁Eng . ▁ 1 st ▁Hon ours , ▁University ▁Medal ist , ▁ 1 9 7 5 ). ▁He ▁later ▁completed ▁a ▁Ph D ▁degree ▁at ▁the ▁University ▁of ▁Sydney , ▁the ▁Department ▁of ▁Mechan ical ▁Engineering ▁in ▁ 1 9 7 9 . ▁ ▁Career ▁He ▁has ▁been ▁a ▁fac ulty ▁member ▁in ▁Mechan ical ▁Engineering ▁at ▁University ▁of ▁New castle ▁( Austral ia ) ▁( 1 9 7 8 – 8 0 ) ▁and ▁at ▁the ▁University ▁of ▁Sydney , ▁Sydney , ▁Australia ▁( 1 9 8 0 - 0 2 ). ▁At ▁the ▁University ▁of ▁Sydney , ▁he ▁held ▁a ▁Personal ▁Chair ▁( 1 9 9 1 - 0 2 ). ▁He ▁was ▁a ▁Professor ▁of ▁Mechan ical ▁Engineering ▁at ▁the ▁National ▁University ▁of ▁Singapore , ▁Singapore ▁( 2 0 0 0 – 0 4 , ▁ 2 0 1 1 – present ). ▁He ▁was ▁the ▁found ing ▁Chair ▁in ▁Bio - Engine ering ▁Division , ▁which ▁later ▁becomes ▁known ▁as ▁Bi omed ical ▁Engineering ▁Department ▁at ▁the ▁National ▁University