Article
Environmental Sciences
Jost Kemper, Ulf Riebesell, Kai Graf
Summary: The direct effects of artificial upwelling (AU) on nutrient spread and concentration in the ocean's mixed surface layer are studied, and the new simulation method is found to capture the expected flow phenomena well. Comparative studies of design variants are presented and analyzed to maximize the retention of nutrients in the mixed surface layer.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Mechanics
Tejaswin Parthasarathy, Yashraj Bhosale, Mattia Gazzola
Summary: This paper presents analytical solutions to a problem involving a visco-elastic solid layer sandwiched between two fluid layers. The system dynamics are explained based on fluid viscosity and solid elasticity using wave and boundary layer theory. The findings provide a physical interpretation of elasto-hydrodynamic coupling and have potential applications in various biophysical phenomena. Additionally, the obtained solutions serve as rigorous benchmarks for testing numerical solvers for coupled incompressible fluid-hyperelastic solid and multi-phase systems.
JOURNAL OF FLUID MECHANICS
(2022)
Article
Chemistry, Multidisciplinary
Shun Zhang, Zhengpeng Wan, Georgios Pavlou, Amy X. Zhong, Liling Xu, Roger D. Kamm
Summary: The study finds that interstitial flow treatment can improve vasculogenesis by upregulating the expression of MMP-2. A novel strategy involving the interplay between interstitial flow and MMP-2 inhibitor is successfully implemented to regulate the morphological parameters of self-organized microvascular networks, while maintaining vascular permeability and perfusability. These findings and methods are of great significance in boosting the development of organotypic microvascular networks.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Engineering, Marine
He Wang, Rui Wang, Jian-Min Zhang
Summary: This study investigates the changes in suction pressure and seepage field during the process of suction caisson installation in sand using ALE large deformation solid-fluid coupled FEM. Results show that the difference in penetration resistance for jacked and suction installation is caused by seepage and excess pore pressure generated during the suction caisson installation, highlighting the importance of considering seepage in the evaluation of suction caisson penetration.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Computer Science, Interdisciplinary Applications
Emad Tandis, Ali Ashrafizadeh
Summary: This paper focuses on studying the effect of fluid compressibility on wave propagation and fluid-solid interactions in a flexible tube. Results show that using the weakly compressible fluid model is more efficient in solving strongly coupled FSI problems involving apparently incompressible fluids, like water. Conversely, the traditional incompressible fluid model may produce unrealistic computational results in such scenarios.
ENGINEERING WITH COMPUTERS
(2021)
Article
Engineering, Chemical
Zeyu Li, Zhenbo Tong, Aibing Yu, Hao Miao, Kaiwei Chu, Hao Zhang, Gang Guo, Jiang Chen
Summary: Hydrogen utilization is gaining attention and the supercritical water circulating fluidized bed reactor can generate hydrogen. This study uses CFD to analyze cyclone separation mechanisms under supercritical fluid, finding that changing the content of carbon dioxide and adding extra dipleg can improve cyclone performance.
Article
Engineering, Chemical
Haoyu Wang, Zhen Tan, Shibo Kuang, Aibing Yu
Summary: This paper presents a numerical study of particle-fluid flow and wall erosion in centrifugal slurry pumps. The results show that the solid concentration has a significant impact on pump efficiency and casing erosion.
Article
Peripheral Vascular Disease
Zhi-He Jin
Summary: This study explores the characteristics of interstitial fluid flow in a solid tumor with partial fluid leakage at the tumor surface under oscillatory microvascular pressure. Results show that partial fluid leakage reduces pore pressure drop and fluid velocity near the surface, while both pore pressure and fluid velocity decrease significantly with an increase in vascular frequency. The amplitude of pore pressure may reach that of vascular pressure under steady state conditions.
MICROVASCULAR RESEARCH
(2021)
Article
Oncology
Gwenael Page, Marion Tardieu, Jean-Luc Gennisson, Laurent Besret, Philippe Garteiser, Bernard E. Van Beers
Summary: The biomechanical properties of tumors, including viscoelasticity and pressure, are associated with tumor severity. MR elastography shows potential for non-invasive assessment of tumor viscoelasticity, while the study suggests that compression rate could serve as a non-invasive biomarker for tumor solid stress. The findings highlight the importance of studying tumor biomechanical features for a better understanding of tumor behavior.
Article
Biophysics
Suyue Han, Todd Currier, Mahdiar Edraki, Boyuan Liu, Maureen E. Lynch, Yahya Modarres-Sadeghi
Summary: This study developed a flow visualization method using Phase-Contrast Magnetic Resonance Imaging (PC-MRI) to measure flow velocities within a 3D-printed microCT-based rendering of a bone scaffold. The experimental results showed quantitative agreement between numerically and experimentally observed flow velocities at different slices of the scaffold, demonstrating the validity of this experimental approach for validating numerical studies and gaining insight into flow behavior inside tissue-engineered scaffolds.
JOURNAL OF BIOMECHANICS
(2021)
Article
Engineering, Multidisciplinary
Sohail Nadeem, Shahbaz Ali, Nevzat Akkurt, Mohamed Bechir Ben Hamida, Shahah Almutairi, Hassan Ali Ghazwani, Sayed M. Eldin, Zareen A. Khan, A. S. Al-Shafay
Summary: This paper presents a comprehensive study on the mathematical modelling and numerical simulation of non-Newtonian blood flow in an idealized stenosed artery. The results show that the non-Newtonian nature of the fluid model significantly influences flow dynamics, with a greater degree of stenosis leading to higher velocity and pressure drop. Wall shear is substantially larger in stenotic passages, and the severity of stenosis is directly related to this increasing behavior.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Automation & Control Systems
Jie Pan, Fan Chen, Jin Meng, Huan Zhao, Zhaocheng Dong, Donglin Pu, Peng Ruan
Summary: This paper reveals the material removal principle and the influence of different process parameters in the robotic wet polishing process through modeling and simulation of the particle-liquid two-phase flow, providing an accurate estimation of the material removal rate.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Biology
S. Schoenborn, T. Lorenz, K. Kuo, D. F. Fletcher, M. A. Woodruff, S. Pirola, M. C. Allenby
Summary: Vascular compliance, both a cause and consequence of cardiovascular disease, is important in the patency of vascular grafts. However, studying the biomechanical effects of localized changes in compliance has been challenging due to limited medical imaging technologies and surgical simulation materials. To address this, a coupled silico-vitro platform was developed to validate numerical fluid-structure interaction results with physical prototypes. The results of this study provide insights into the mechanical behavior of arterial phantoms and have promising applications in studying diseases and optimizing vascular prostheses.
COMPUTERS IN BIOLOGY AND MEDICINE
(2023)
Review
Engineering, Chemical
Amit K. Thakur, Rahul Kumar, Nilanjana Banerjee, Pranava Chaudhari, Gajendra Kumar Gaurav
Summary: This paper critically discusses the multi-scale behavior of liquid-solid hydrodynamics in polyolefin slurry reactors, as well as the impact of liquid-solid and solid-solid interactions on reactor performance. Possible methods to avoid reactor operational difficulties are also discussed.
Article
Multidisciplinary Sciences
Mohammad Kiani Shahvandi, M. Soltani, Farshad Moradi Kashkooli, Babak Saboury, Arman Rahmim
Summary: We present a comprehensive mathematical model for the distribution of radiopharmaceuticals in vascularized solid tumors. The model takes into account various tumor-related parameters and the dynamic structure of tumor microvascular networks. The results show that the highest uptake of [F-18]FDG occurs in the tumor area due to high capillary permeability. The study has implications for cancer biology, mathematical oncology, medical physics, and radiology.
SCIENTIFIC REPORTS
(2022)