Welcome to the 21AFMC website. I am pleased to invite you to attend the 21st Australasian Fluid Mechanics Conference (AFMC) which will be hosted by The University of Adelaide in December 2018. The conference is organised in collaboration with the Australasian Fluid Mechanics Society and will bring together an international group of scientists, engineers and educators with common interests in fluid mechanics. The conference covers all fields of fluid mechanics research and applications, and a diverse range of research areas will be represented by the exceptional plenary speakers. The AFMC is fully peer-reviewed, with its proceedings published online, and offers a range of student prizes to showcase the emerging talent in our field. Since the AFMC’s inception in 1962, The University of Adelaide has twice hosted the conference, and we are pleased to welcome it back again in 2018. We also encourage all delegates to stay on after the conference, to participate in an additional training course, or to enjoy Adelaide, its beaches, wineries and many exciting local destinations. 21AFMC is a family-friendly conference, with child care available for delegates, so we encourage you to make your stay in South Australia a family affair.