Review of Deep-Ocean High-Pressure Simulation Systems
AbstractDeep-sea technology and equipment are required to explore the oceans and utilize ocean resources in the 21st century. Deep-ocean simulation systems (DOSs) play an essential role in the development of deep-sea equipment. This paper gives a detailed overview of deep-ocean high-pressure simulation systems (DOHPSs) worldwide. First, …
High Pressure Die Casting
High Pressure Die Casting. ProSIM has assisted high pressure die casting (HPDC) companies to adopt casting simulation and reap benefits by prediction of casting defects, optimisation of gating design. Designers can arrive at the ingate size and angle to achieve proper flow of melt; study the standing wave formation in the shot sleeve; determine ...
Thermodynamics of high-pressure ice phases explored with …
Most experimentally known high-pressure ice phases have a body-centred cubic (bcc) oxygen lattice. Our large-scale molecular-dynamics simulations with a machine-learning potential indicate that ...
A Numerical Simulation on the Leakage Event of a High-Pressure …
In this study, the simulation of hydrogen leakage of a high-pressure dispenser is conducted using the commercial CFD software FLACS. The remaining part of this paper is organized as follows. Firstly, the basic models in the numerical simulation on hydrogen leakage are introduced in Section 2, together with the establishment of the …
Simulating High Pressure Die Casting with Full Process
Historically most simulations of high pressure die casting process have been done with the "biscuit" method. The biscuit method means that you are not simulating the whole process but only the shot (casting + ingate system + the biscuit), meaning that filling starts at the point where the biscuit begins. Biscuit simulation.
Numerical simulation of high-pressure hydrogen jet flames …
Simulation of high-pressure hydrogen jet2.1. Numerical model. In the following analysis, the Al-carbon fiber/epoxy composite hydrogen storage vessel is used as the object to establish the numerical model. The length of the tank is 900 mm, the external diameter is 400 mm, as shown in Fig. 1.
High-pressure melting behaviors of calcite from first-principles simulation
The temperature and pressure evolutions over time for the selected high-pressure modified aragonite structure at ρ = 5.99 g/cm 3 and different temperatures are depicted in Fig. 2.When the initial temperature is 16000 K, the temperature rapidly decreases to approximately half of the initial value, stabilizing at around 6816 K, indicating that the …
Design of Experiments and Numerical Simulation of Deteriorated High
During the operation of a jet engine, deterioration occurs. This constantly affects the engine performance parameters like exhaust gas temperature (EGT) and thrust specific fuel consumption (TSFC). If the EGT reaches a given limit, the engine has to be overhauled during a shop visit at a MRO company (Maintenance, Repair and Overhaul). …
Simulation of high-pressure methane-oxygen combustion with …
The modeling and simulation of methane-oxygen combustion at high pressure requires a dedicated kinetic mechanism to obtain a precise description of the fuel decomposition. However, using the detailed mechanisms literature in high-fidelity simulations, like direct numerical simulations, is not possible due to the high numerical …
High-Fidelity Simulations of a High-Pressure Turbine Stage: Effects …
Abstract. We present the first wall-resolved high-fidelity simulations of high-pressure turbine (HPT) stages at engine-relevant conditions. A series of cases have been performed to investigate the effects of varying Reynolds numbers and inlet turbulence on the aerothermal behavior of the stage. While all of the cases have similar mean …
High pressure CO2 absorption studies on imidazolium
Classical molecular dynamics simulations for CO 2 + ILs mixed fluids were carried out using the MDynaMix v. 5.0 molecular modeling package [74].Simulations were performed in the NPT ensemble using the Nose–Hoover method to control the temperature and pressure of the simulation system [75].The equations of motion were solved by …
Review of Deep-Ocean High-Pressure Simulation …
This paper gives a detailed overview of deep-ocean high-pressure simulation systems (DOHPSs) worldwide. First, the history of DOS is introduced, and …
Review of modelling and simulation of high pressure treatment …
An additional challenge for numerical simulation is related to a new type of high pressure treatment, namely the short time high pressure process (Rauh et al., 2006a, Rauh et al., 2006b). This implies pressure …
Computational high‐pressure chemistry: Ab initio …
Modern computational tools allow the simulation of atoms, molecules, supramolecular clusters and periodic materials at high pressure. Using these simulation techniques, …
Understanding high pressure molecular hydrogen …
Open access. Published: 06 October 2020. Understanding high pressure molecular hydrogen with a hierarchical machine-learned potential. Hongxiang Zong, Heather Wiebe …
Evidence for supercritical behaviour of high-pressure …
Thermodynamics of high-pressure ice phases explored with atomistic simulations. Article Open access 10 August 2022. Main. …
Simulation of Supersonic High-Pressure Gas Atomizer for …
A comprehensive study was performed on the atomization of molten stainless steel in a high-pressure gas atomizer (HPGA). Computer simulations were carried out using ANSYS-FLUENT to model the supersonic, turbulent flow of the atomization gas. Particle tracking and solidification were also included in the model to …
High Pressure Test Simulation
To verify, it is helpful to simulate deep well conditions and subject new tool designs to pressure levels found under the earth's crust. SOLUTION. The Challenge: The manual system places technicians at risk by exposing …
Stability and infectivity of allochthonous viruses in
Deep-sea environment simulation. The virus was diluted with 30 kDa filtered deep sea water (3000 m) ... In such cases, high pressure may cause subtle changes to capsid structure or the tail proteins that are essential for viral adsorption on host cell without destroying the integrity of the capsid or the DNA inside.
Numerical simulation analysis of the shrinking fit of ultra-high
The ultra-high pressure polyethylene tubular reactor requires an casing heat exchanger because of the high temperature in the working process. Instead of using welding to connect the inner and outer tubes, ultra-high pressure tubular reactors are usually connected by means of the shrinking fit. The shrinking fit is essentially an interference fit …
A molecular simulation study on transport properties of FAMEs in high
The application of EMD has been common in studying tribology of lubricants in high-pressure conditions up to 1 GPa [14], [16], where the appearance of solid nuclei is possible. It should be stressed that identifying the conditions where spatial heterogeneities occur is vital for the reliability in predicting high-pressure transport properties. 5.2.
Chemistry Simulation: Ideal Gas Behavior
The Ideal Gas Behavior Simulation allows a learner to explore the relationship between gas parameters such as pressure, volume, temperature, and the number of particles.
Modeling and Simulation of High Pressure Water Mist Systems
This paper describes work done to improve and validate the capability of fire dynamics simulator (FDS) to predict the dynamics of water mist sprays. Three single orifice and five multi-orifice spray heads are modeled with FDS based on information on the flow-rate, spray angle, operating pressure and experimentally determined particle size …
High Pressure Die Casting Workspace Highlights
The High Pressure Die Casting Workspace is an intuitive modeling environment designed to help engineers successfully model high pressure die casting applications with FLOW-3D CAST.Full control of shot sleeve motion, combined with advanced die thermal control, machine parameter modeling, and accurate resolution of fill and backpressure conditions …
High pressure die casting simulation using smoothed particle
Abstract. Extensive two dimensional smoothed particle hydrodynamics (SPH) simulations of high pressure die casting are presented. SPH, being Lagrangian, is very well suited to these momentum dominated flows with complex free surface behaviour including fragmentation.
Fluid Pressure and Flow
We recommend using the latest version of Chrome, Firefox, Safari, or Edge. Explore pressure in the atmosphere and underwater. Reshape a pipe to see how it changes fluid flow speed. Experiment with a leaky water tower to see how the height and water level determine the water trajectory.
Gas Properties
Pump gas molecules to a box and see what happens as you change the volume, add or remove heat, and more. Measure the temperature and pressure, and discover how the …
Numerical simulation method of erosion–corrosion of high-pressure …
This study aims at proposing a numerical simulation method of the erosion–corrosion (EC) of high-pressure pipe caused by solid–liquid two phase flow and acid aggressive solution. A modified flow-accelerated corrosion (FAC) model and Stress-accelerated Erosion (SAE) model were proposed. For EC prediction, both stress …
Dynamic Simulation of a High Pressure Regulator
2011. In this paper, the dynamic simulation for a high pressure regulator is performed to obtain the regulator behavior. To analyze the regulator performance, the equation of motion for inner parts, the continuity equation for diverse chambers and the equation for mass flow rate were derived. Because of nonlinearity and coupling, these ...
Unifying high-pressure grinding rolls models
It is calibrated on 18 pilot scale data sets. This paper unifies high-pressure grinding rolls crusher (HPGR) models of the working gap, mass flow rate, power draw, and centre and edge product particle size distribution models to produce a framework that allows the simulation of the equipment for process optimization and control studies.