Hi Lars,

I am working on dynamic stall problems using Nektar++. There is a moving reference frame method in Nektar++. We can use it to solve the plunging and pitching problems without moving grid.

But if the rotation angle is too large, the airfoil wake sweeps a wide area and it may require a very large refined domain to capture the wake.

Mohsen developed a slid mesh method, I am not sure if it can be used in incompressible solver. If so, the wake issue can be solved.

Best

Ankang

Research Associate

Department of modern mechanics

University of Science and Technology of China

-----Original Messages-----
From: "Lars Wein" <wein@tfd.uni-hannover.de>
Send time: Monday, 03/31/2025 19:07:17
To: nektar-users@imperial.ac.uk
Subject: [Nektar-users] nektar for dynamic stall simulations

Dear Nektar-Team,

last week during the ETC conference in Hannover, I listend to Mr. Spencer. I think he mentioned you are currently working on a methodology to simulate moving bodies. In my team, we are simulating dynamic stall on wind energy turbines, using openFOAM and a sliding mesh interface. The blade performs an oscillating pitching motion, defined by the user (not two-way FSI). Since we strive for hybrid RANS LES, or even wall resolved LES, I would prefer to switch from openFOAM to a solver that supports higher order numerical methods. Do you think Nektar would be feasible for this kind of simulations?

Best regards

Lars Wein

--

Dr.-Ing. Lars WEIN
Team Leader Multiphysics of Turbulent Flows &
Deputy COO

Gottfried Wilhelm Leibniz Universität Hannover
Institute of Turbomachinery and Fluid Dynamics | TFD
An der Universität 1
Geb. 8140, Raum 209
30823 Garbsen, Germany
Telefon:    +49 (0)511 762 2347
Fax:           +49 (0)511 762 3997
E-Mail:      wein@tfd.uni-hannover.de
Web:         www.tfd.uni-hannover.de