Characterization of continuous-flow pulsed UV light reactors for processing of liquid foods in annular tube and coiled tube configurations using actinometry and computational fluid dynamics

2021 ◽  
Vol 304 ◽  
pp. 110590
Author(s):  
Ronit Mandal ◽  
Anubhav Pratap-Singh
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Continuous Flow ◽  
Uv Light ◽  
Coiled Tube ◽  
Liquid Foods ◽  
Pulsed Uv Light ◽  
Annular Tube

Computational Fluid Dynamics (CFD) Study of the 4th Generation Prototype of a Continuous Flow Ventricular Assist Device (VAD)

2004 ◽  
Vol 126 (2) ◽  
pp. 180-187 ◽  
Author(s):  
Xinwei Song ◽  
Houston G. Wood ◽  
Don Olsen
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Blood Flow ◽  
Ventricular Assist Device ◽  
Continuous Flow ◽  
Surrounding Tissue ◽  
Assist Device ◽  
Ventricular Assist ◽  
Wide Range ◽  
Computational Fluid Dynamics Cfd

The continuous flow ventricular assist device (VAD) is a miniature centrifugal pump, fully suspended by magnetic bearings, which is being developed for implantation in humans. The CF4 model is the first actual prototype of the final design product. The overall performances of blood flow in CF4 have been simulated using computational fluid dynamics (CFD) software: CFX, which is commercially available from ANSYS Inc. The flow regions modeled in CF4 include the inlet elbow, the five-blade impeller, the clearance gap below the impeller, and the exit volute. According to different needs from patients, a wide range of flow rates and revolutions per minute (RPM) have been studied. The flow rate-pressure curves are given. The streamlines in the flow field are drawn to detect stagnation points and vortices that could lead to thrombosis. The stress is calculated in the fluid field to estimate potential hemolysis. The stress is elevated to the decreased size of the blood flow paths through the smaller pump, but is still within the safe range. The thermal study on the pump, the blood and the surrounding tissue shows the temperature rise due to magnetoelectric heat sources and thermal dissipation is insignificant. CFD simulation proved valuable to demonstrate and to improve the performance of fluid flow in the design of a small size pump.

Characterization of the Hydrodynamics in the USP Basket Apparatus Using Computational Fluid Dynamics

2020 ◽  
Vol 109 (3) ◽  
pp. 1231-1241
Author(s):  
Andres F. Martinez ◽  
Kushal Sinha ◽  
Nandkishor Nere ◽  
Russell Slade ◽  
Steven Castleberry
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics

scholarly journals Patient-Specific Characterization of Breast Cancer Hemodynamics Using Image-Guided Computational Fluid Dynamics

2020 ◽  
Vol 39 (9) ◽  
pp. 2760-2771 ◽  
Author(s):  
Chengyue Wu ◽  
David A. Hormuth ◽  
Todd A. Oliver ◽  
Federico Pineda ◽  
Guillermo Lorenzo ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Patient Specific ◽  
Image Guided

Characterization of a New Structured Packing by Computational Fluid Dynamics

2020 ◽  
Vol 44 (1) ◽  
pp. 156-163
Author(s):  
Amin Hassanvand ◽  
Seyyed Hamid Esmaeili-Faraj ◽  
Mojtaba Saei Moghaddam ◽  
Rasoul Moradi
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Structured Packing
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