Abstract An adaptive mesh refinement (AMR) technique based on nodal linked-list data structure for lattice Boltzmann method (LBM) is proposed in this paper. It makes connections between which hierarchical and LBM calculation to retain the simplicity of LBM. Based uniform meshes, algorithm refines meshes by constructing nodes levels refined. In structure, relationships neighbors upper lower leve...

This paper presents a stencil adaptive phase-field lattice Boltzmann method (LBM) for the simulation of two-dimensional multiphase flows. In the phase-field model, the interface is viewed as a layer with finite thickness where physical parameters vary steeply and continuously. In the present study, a phasefield LBM is used. In this model, the Cahn–Hilliard equation can be correctly recovered by...

Lattice Boltzmann method (LBM) has become an alternative method of computing a variety of fluid flows, ranging from low Reynolds number laminar flows to highly turbulent flows. For turbulent flows, non-uniform grids are preferred. Taylor series expansionand least-squares-based LBM (TLLBM) is an effective and convenient way to extend standard LBM to be used on arbitrary meshes. In order to show ...

Lattice Boltzmann Method (LBM) is a novel numerical method for flows simulations. Compared with classic methods of Finite Difference Method, Finite Volume Method and Finite Element Method, LBM has numerous advantages, including inherent parallelization and simplicity of boundary condition treatment. The LBM usually has a constraint of incompressible fluid (Mach number less than 0.4). A variant ...

The lattice Boltzmann method (LBM) is an efficient simulation technique for computational fluid mechanics and beyond. It based on a simple stream-and-collide algorithm Cartesian grids, which easily compatible with modern machine learning architectures. While it becoming increasingly clear that deep can provide decisive stimulus classical techniques, recent studies have not addressed possible co...

OBJECTIVE To investigate the long-term effects of nasal continuous positive airway pressure (CPAP) ventilation in patients with obstructive sleep apnea syndrome (OSAS) on body composition (BC) and IGF1. DESIGN Observational study. SUBJECTS Seventy-eight (11 females and 67 males) OSAS patients who were compliant with CPAP (age 51+/-1.1 years) participated in the study. We assessed body mass ...

BACKGROUND To determine the association of the A55T and K153R polymorphisms of the Myostatin gene with obesity, abdominal obesity and lean body mass (LBM) in Asian Indians in north India. MATERIALS AND METHODS A total of 335 subjects (238 men and 97 women) were assessed for anthropometry, % body fat (BF), LBM and biochemical parameters. Associations of Myostatin gene polymorphisms were evalua...

The present study investigated potential sex-related differences in the metabolic response to carbohydrate (CHO) ingestion during exercise. Moderately endurance-trained men and women (n = 8 for each sex) performed 2 h of cycling at approximately 67% Vo(2 max) with water (WAT) or CHO ingestion (1.5 g of glucose/min). Substrate oxidation and kinetics were quantified during exercise using indirect...

We have examined the responses of energy and protein metabolism to nutrient intake in nine patients with lung carcinoma, of whom none were cachexic and only one had distant metastases, compared with nine control patients for elective aneurysm surgery, who were comparable in terms of age, body mass index, and smoking habits. Whole-body protein turnover and leucine oxidation were assessed by prim...

In recent years, the lattice Boltzmann equation has developed into a promising technique for computational fluid dynamics (CFD). The model (LBM) approach is derived from and kinetic theory, as opposed to standard CFD methods that are based on direct discretization of Navier–Stokes equations. this paper, Newtonian flow passing through wavy walled channel been examined laminar turbulent transitio...