Phd position in Inertia-Driven Hydrodynamics of Synthetic Active Suspensions in the Low and Moderate Reynolds Number Regime

III Research Tasks (a) (b) Figure 3: (a) Binary interaction of spinners. (b) 3D chiral active suspension of truncated cones [10]. We consider neutrally buoyant inertial spinners with fore-aft asymmetry under a prescribed torque. ➫ Task 1 investigates the influence of particle shape on the propulsion force of a fore-aft asymmetric rotating particle, such as cone, truncated cone, and polygon-based prisms as depicted in Fig. 2b, to establish propulsion scaling law and identify the key shape parameters governing self-propulsion efficiency. ➫ Task 2 studies interaction of two spinning fore-after-asymmetric particles with constant rotation axes as depicted in Fig. 3a, in order to identify the conditions leading to collective motion, attraction vs. repulsion. Cargo transport by hybrid active-passive systems will also be explored. ➫ Task 3 focuses on the chiral and active flocking behavior of a dilute suspension in unbounded and cylindrical confined geometries as shown in Fig. 3b. By relaxing the constraint of a fixed rotation axis, an even richer phenomenology is exp IV Candidate Profile We are seeking a candidate with a Master’s degree or an engineering degree and the following skills: ✧ Fluid Mechanics: Solid understanding of the fundamental equations (incompressible flows) and the associated physical phenomena. Familiarity with numerical methods and commonly used discretization schemes. ✧ Coding & HPC: Strong proficiency in C/C++ and the Linux environment is essential. Familiarity with highperformance computing (HPC) environments, including script writing, job submission, and performance optimization. Experience with codes such as Basilisk or OpenFOAM would be an asset. ✧ Technical English: Ability to write scientific reports and technical documentation in English. ✧ Teamwork: Ability to work within international teams (potential scientific collaborations with the University of British Columbia and Purdue University) and to communicate effectively. V Application Materials and Contact Information Please send your CV and a brief cover letter to Dr. Guodong Gai (guodong.gai@imft.fr), Prof. Olivier Simonin (olivier.simonin@imft.fr) and Dr. Patricia Ern (patricia.ern@imft.fr). We look forward to welcoming you to Toulouse!