报告题目：Development of an Aeroprediction Method for Slender Bodies Including Aeroelastic Effects Using Euler-Based Local Piston Theory
报告人： Prof. Laurent Dala (Northumbria University)
报告地点：腾讯视频会议ID: 344 957 061
Slender Body aerodynamics involves nonlinear interference between components, including viscous interactions. Aeroelastic analysis is thereby typically accomplished by computational fluid/structural dynamic (CFD/CSD) methods, which are computationally expensive. Commercial aerodynamic prediction codes are available, but are not suited for aeroelastic analysis including viscous-dominated effects at high flow incidences.
The first step was to developed an analytical/engineering method using a 2D unsteady potential formulation (called the free vortex model or FVM) to predict the normal force, centre-of-pressure and vortex position for cruciform wing-body combinations in the “plus” orientation, at supersonic and extended to low subsonic speeds
This unique and only world method based on an unsteady analytical approach uses the same equations from subsonic to supersonic/hypersonic flows
The second part of this presentation is devoted to the extension of the local piston theory (LPT), which is typically 4 order of magnitude more computationally efficient than unsteady CFD and which requires a single reference steady CFD solution, with the aim of making it more and accurate and robust in application to practical geometries. This is accomplished through physics-based extensions to the mathematical formulation and through the development of a mathematical basis for LPT in viscous flows.
Professor Laurent Dala is a Full Professor in Aerospace Engineering and the Head of Department of the Mechanical and Construction Engineering at Northumbria University. He received his PhD in Aerospace Engineering from the University of Manchester, and graduated from the French Grandes Ecoles in Aerospace Engineering (Ecole Superieure des Techniques Aerospatiales-ESTA) and in Mechanical and Electrical Engineering (Ecole Speciale des Travaux Publics, du Batiment et de l’Industrie-ESTP).
He has previously held positions as Chief Scientist in Aerospace Engineering for the Council for Scientific and Industrial Research (South Africa) and the Chair in Aerospace Engineering at the University of Pretoria. He was also the President of the Aeronautical Society of South Africa (AeSSA). He is also a Fellow of the Royal Aeronautical Society (FRAeS), a Chartered Engineer (CEng) and an Eur-Ing.
Professor Laurent Dala has a research experience of more than 25 years in Aerospace Engineering which he has led various research projects around the world. He was the Technical Advisor for the French Space Agency CNES for the Ariane Launcher Programme and the Space Shuttle Hermes
He is a world specialist in Aerodynamics and Aeroelasticity in particular in flow control, Analytical Prediction Methods and multidisciplinary optimisation methods. He has published over 160 peer-reviewed papers/conferences. He has 4 Patents. He has been invited more than 60 as a guest speaker throughout the whole world and is a multiple awards winner. He is a Member of the Specialist Committee for Aerodynamics at the Association Aeronautique et Astronautique de France, Visiting Professor in France, South Africa, Russia and China. He is a member of the EPSRC’s College of Peer Reviewers, the European Research Council’s College of Peer Reviewers and the National Research Foundation’s College of Peer Reviewers (South Africa).