Flow around the numerical butterfly model (VIDEO) Shinshu University This video is under embargo. Please login to access this video. Caption The flow around the numerical butterfly model is calculated by the immersed boundary-lattice Boltzmann method, and the flow field is visualized using an index called vorticity. The flapping of the model causes a flow downward and backward. Credit Kosuke Suzuki, Masashi Nakamura, Masaya Kouji, Masato Yoshino Usage Restrictions Credit must be given to the creator. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.