Analysis for fluid dynamics

Research on the microchannel and its flow and heat transfer properties has received much attention. This study employed Autodesk Inventor software to build the model, and the Computational Fluid Dynamics software (Ansys Fluent 14) was used for numerical simulation. Taguchi analysis methods, ANOVA, and Minitab statistics testing were used.

11p vijeff 27-11-2023 8 6   Download

Part 1 of ebook "FE review manual: Rapid preparation for the general fundamentals of engineering exam" provides readers with contents including: Topic I - Units and fundamental constants; Topic II - Conversion factors; Topic III - Mathematics; Topic IV - Statics; Topic V - Dynamics; Topic VI - Mechanics of materials; Topic VII - Fluid mechanics;...

373p hanlinhchi 29-08-2023 3 1   Download

Part 1 of ebook "Computing handbook: Computer science and software engineering" provides readers with contents including: structure and organization of computing; computational thinking; data structures; basic techniques for design and analysis of algorithms; graph and network algorithms; computational geometry; complexity theory; formal models and computability; cryptography; algebraic algorithms; some practical randomized algorithms and data structures;...

1126p hanlinhchi 29-08-2023 16 5   Download

Calculating intra-aneurysm flow uses optical flow with computational fluid dynamics simulation on the numerical analysis. This is a new method to better understand the intravascular flow and aneurysm flow as well as factors related to the inflow vortex and the inflow jet which increase the rupture risk in patients with an aneurysm.

9p vigamora 23-05-2023 6 3   Download

Microfluidics systems based on two-phase fluid dynamics have been widely applied from industrial machinery to the aerospace and automotive applications. The systems are designed to handle small volumes of liquids, often in the microliter or even nanoliter range. Droplet-based microfluidics is used for biochemical analysis or materials synthesis as well.

4p vifalcon 18-05-2023 7 5   Download

The increasing use of Intelligent Transport System (ITS) can enable very close vehicle spacings which generally results in a net drag reduction for the resulting convoys. The majority of vehicle development has, to date, been for vehicles in isolation, thus the study of interaction effects is becoming increasingly important. The main objective of this research is to investigate the use of Computational Fluid Dynamics (CFD) for understanding convoy aerodynamics and to further the understanding of airflow interaction between vehicles via CFD.

154p runthenight07 01-03-2023 4 2   Download

Spatial comprehensive two-dimensional liquid chromatography (xLC×xLC) may be an efficient approach to achieve high peak capacities in relatively short analysis times, thanks to parallel second-dimension separations.

4p viginny 23-12-2022 7 3   Download

Conventional one-dimensional column-based liquid chromatographic (LC) systems do not offer sufficient separation power for the analysis of complex mixtures. Column-based comprehensive two-dimensional liquid chromatography offers a higher separation power, yet suffers from instrumental complexity and long analysis times.

8p viginny 23-12-2022 9 3   Download

This paper is performed by two experimental methods and Computational Fluid Dynamics. Thermal analysis and calculation are performed on various points on the coil or barrel surface. Correspondingly, the temperature distribution is calculated for the different working modes of the transformer in the case of no-load and rated and short-circuit.

6p vifred 23-12-2022 6 2   Download

Glucose oxidase was covalently immobilized to a porous electrode, which was developed by using ferrocene functionalized polyethyleneimine, multiwall carbon nanotubes, and carbon cloth for biofuel cell applications in our recent studies. The kinetics parameters (i.e. kM, Vmax) and other parameters required for the modeling study were determined experimentally. Fuel cell flow channel geometry was analyzed by a computational fluid dynamics modeling approach. Substrate flow rate and mass transfer for each proposed channel type were considered in the simulations.

17p tudichquannguyet 29-11-2021 5 1   Download

Organoid cultivation in suspension culture requires agitation at low shear stress to allow for nutrient diffusion, which preserves tissue structure. Multiplex systems for organoid cultivation have been proposed, but whether they meet similar shear stress parameters as the regularly used spinner flask and its correlation with the successful generation of brain organoids has not been determined.

10p viwyoming2711 16-12-2020 12 1   Download

The paper is focused on the establishment of a mathematical model describing the motion of bolt carrier for the amphibious rifles when shooting underwater in the period of the projectile moving to the position of the gas port. Besides, the conditions for bolt carrier motion are studied. The object of this paper is the bolt carrier assembly of the 5.56 mm amphibious rifle according to the designing of the research project of the ministry of defense 2017.73.034. The result of this research indicates that: for the 5.

8p kethamoi6 01-07-2020 8 1   Download

The first part of the study was intended to select the best turbine ventilator design to test its performance while in the second part, simulation study was conducted on the selected design in comparison with the benchmarks (currently market-available turbine ventilators).

11p lucastanguyen 01-06-2020 19 2   Download

A propeller is a device converting rotary energy from the piston engines into the energy of the fluid thereby creating thrust to propel vessels. For this reason, it is extremely necessary to perform analysis on hydrodynamic characteristics of propellers and Computational Fluid Dynamics (CFD) can be considered the most sufficient way to accomplish this process.

7p vimante2711 05-03-2020 10 1   Download

Reactor internals are sensitive to dynamic loads such as earthquakes and flow induced vibration. Thus, it is essential to identify the dynamic characteristics to evaluate the seismic integrity of the structures. However, a full-sized system is too large to perform modal experiments, making it difficult to extract data on its modal characteristics. In this research, we constructed a finite element model of the APR1400 reactor internals to identify their modal characteristics.

10p minhxaminhyeu5 30-06-2019 19 0   Download

In this study, we proposed a newly designed sulfuric acid transfer system for the sulfur-iodine (SI) thermochemical cycle. The proposed sulfuric acid transfer system was evaluated using a computational fluid dynamics (CFD) analysis for investigating thermodynamic/hydrodynamic characteristics and material properties. This analysis was conducted to obtain reliable continuous operation parameters; in particular, a thermal analysis was performed on the bellows box and bellows at amplitudes and various frequencies (0.1, 0.5, and 1.0 Hz).

10p minhxaminhyeu5 30-06-2019 18 1   Download

Improvement of numerical analysis methods has been required to solve complicated phenomena that occur in nuclear facilities. Particularly, fluid-structure interaction (FSI) behavior should be resolved for accurate design and evaluation of complex reactor vessel internals (RVIs) submerged in coolant. In this study, the FSI effect on dynamic characteristics of RVIs in a typical 1,000 MWe nuclear power plant was investigated.

11p minhxaminhyeu4 26-06-2019 22 1   Download

In the SG (steam generator) of PWR (pressurized water reactor) for a nuclear plant, hundreds of Ushaped tubes are used for the heat exchanger system. They interact with primary pressurized cooling water flow, generating flow-induced vibration in the secondary flow region. A simplified U-tube model is proposed in this study to apply for experiment and its counterpart computation. Using the commercial code, ANSYS-CFX, we first verified the Moody chart, comparing the straight pipe theory with the results derived from CFD (computational fluid dynamics) analysis.

9p minhxaminhyeu3 12-06-2019 15 1   Download

The distribution of lateral hydraulic forces within the core row is estimated based on a two-dimensional Computational Fluid Dynamics model with porous media, assuming symmetric or asymmetric core inlet and outlet flow profiles. The influence of the creep rate on the bow amplitude is tested based on different creep models for guide tubes and fuel rods. Different FA initial states are considered: fresh FAs or FAs with higher burnup, which may be initially straight or exhibit an initial bow from previous cycles.

9p minhxaminhyeu3 25-06-2019 19 0   Download

The vibration frequencies for different filling ratios of cylindrical shells are obtained and compared with existing experimental and theoretical results which indicate that the fluid filling can reduce significantly the natural frequencies of studied cylindrical shells. Detailed parametric analysis is carried out to show the effects of some geometrical and material parameters on the natural frequencies of orthotropic cylindrical shells.

14p thienthanquydu 21-10-2018 30 1   Download