1-20 of 90 Search Results for

(modeling and simulation AND process flow kinetic variables AND measure)

Proceedings Papers
Close
Sort by
Proceedings Papers

ITSC 2010, Thermal Spray 2010: Proceedings from the International Thermal Spray Conference, 335-340, May 3–5, 2010,
... mechanism has to be used. The simulation resultes are verified by computer tomography measurements of radiation intensity [26]. 4 Summary and Conclusion An approach for simulating the combustion and fluid flow of kerosene driven HVOF-Process has been presented using various interacting models. Fluid flow...
Proceedings Papers

ITSC 2011, Thermal Spray 2011: Proceedings from the International Thermal Spray Conference, 1313-1318, September 27–29, 2011,
... axisymmetric model for the process is developed using Fluent. The model is validated with reference to a simplified one-dimensional approximation of the flow field. Values of pressure, axial velocity, Mach number, as well as static and total temperature are carefully examined. It is found that a zone develops...
Proceedings Papers

ITSC2012, Thermal Spray 2012: Proceedings from the International Thermal Spray Conference, 292-297, May 21–24, 2012,
... Abstract Computational Fluid Dynamics (CFD) is used to model the Shock-wave Induced Spray Process (SISP). SISP utilizes the kinetic and thermal energy induced by a moving shock-wave to accelerate and heat powder particles, similar to Cold Gas-Dynamic Spraying (CGDS), where the particles impact...
Proceedings Papers

ITSC2014, Thermal Spray 2014: Proceedings from the International Thermal Spray Conference, 208-214, May 21–23, 2014,
... the spraying axis. 2 Virtual experimental setups 2.1 3D CFD model of TWAS process A Smart Arc 350 PPG (Sulzer Metco, Switzerland) twin wire arc spraying system was modeled and fully considered in SolidWorks® Flow Simulation CFD environment (Fig. 2). Fig. 2. Schematic view of a 3D-CFD model of the twin-wire arc...
Proceedings Papers

ITSC 2006, Thermal Spray 2006: Proceedings from the International Thermal Spray Conference, 191-196, May 15–18, 2006,
... Abstract A computational fluid dynamic (CFD) model of the cold gas dynamic spray process is presented. The gas dynamic flow field and particle trajectories within an oval shaped supersonic nozzle as well as in the immediate surroundings of the nozzle exit, before and after the impact...
Proceedings Papers

ITSC 2018, Thermal Spray 2018: Proceedings from the International Thermal Spray Conference, 270-277, May 7–10, 2018,
..., a finite volume method has been presented for transiently simulating the coating buildup and bulk heat generation in the coating and the substrate. The model is intended to assist researchers understand thermal affects in the coating process and help design more informed coating patterns to reduce negative...
Proceedings Papers

ITSC 2009, Thermal Spray 2009: Proceedings from the International Thermal Spray Conference, 481-486, May 4–7, 2009,
... values The mathematical model developed accounts for the formation of the plasma jet, the combustion process, and supersonic flow issuing from the spray torch. Simulating the new process made it possible to investigate the effect of the plasma on the velocity and temperature of the gas flow inside...
Proceedings Papers

ITSC 2021, Thermal Spray 2021: Proceedings from the International Thermal Spray Conference, 235-240, May 24–28, 2021,
... temperature was displacement rate, respectively, is the effective plastic assumed to be 297 K for both particle and the substrate in all simulations. displacement at the failure point, and is the rate of damage The Preston-Tonks-Wallace (PTW) material model [1] which variable. In this damage law...
Proceedings Papers

ITSC1997, Thermal Spray 1997: Proceedings from the United Thermal Spray Conference, 549-555, September 15–18, 1997,
... of the total mass flow into air (17). Although the model was found to rate (argon + entrained air) versus the distance from the overestimate somewhat the velocity measurements, the nozzle exit. As it could be assumed when comparing comparison of air molar concentration and temperature argon molar concentration...
Proceedings Papers

ITSC 2015, Thermal Spray 2015: Proceedings from the International Thermal Spray Conference, 252-257, May 11–14, 2015,
..., LAVA3DI. In it the plasma flow is modeled as an unsteady, compressible, Newtonian, turbulent, and chemically reacting ideal multi-component fluid mixture with temperature dependent thermodynamic and transport properties. The plasma jet formation is simulated by solving the conservation equations of mass...
Proceedings Papers

ITSC 2003, Thermal Spray 2003: Proceedings from the International Thermal Spray Conference, 27-35, May 5–8, 2003,
... under the Cold Spray process. After revision and improvement this model can provide an opportunity for the solution of optimization problems by involving real distributions of particles on the size and velocity. For estimation of the particle attachment probability, a very simple simulation was used...
Proceedings Papers

ITSC2016, Thermal Spray 2016: Proceedings from the International Thermal Spray Conference, 321-326, May 10–12, 2016,
..., a reduced kinetic eddy dissipation model has been validated against measured data, but only for constant mass flow. In this study, the equation of state for HVOF spraying is implemented in numerical modeling software in order to correlate variations in mass flow density with pressure and temperature...
Proceedings Papers

ITSC 2004, Thermal Spray 2004: Proceedings from the International Thermal Spray Conference, 363-370, May 10–12, 2004,
... of the process, few systematic studies on the effects of spray variables on coating formation have been conducted. This work represents a systematic examination of kinetic spraying of aluminum powders. Computational modeling of the kinetic spray process was performed along with experimental studies to understand...
Proceedings Papers

ITSC 2004, Thermal Spray 2004: Proceedings from the International Thermal Spray Conference, 758-763, May 10–12, 2004,
... Abstract This paper describes the investigation of low pressure supersonic plasma jets as found in LPPS processes. The main objective is to develop and validate a two-dimensional axisymmetric mathematical model representing such flows. Due to the supersonic nature of the jet, insertion...
Proceedings Papers

ITSC 2004, Thermal Spray 2004: Proceedings from the International Thermal Spray Conference, 707-716, May 10–12, 2004,
... variety in process parameters, it is difficult to optimize the process for each specific coating and substrate combinations. In this paper, the process of particle in-flight, coating growth and pore formation has been analyzed by numerical simulation. Three sub-models, plasma-particle, splat formation...
Proceedings Papers

ITSC 2003, Thermal Spray 2003: Proceedings from the International Thermal Spray Conference, 1191-1196, May 5–8, 2003,
... substantial theoretical knowledge about atmospheric plasma spraying. Known facts on the causal relationships between spray variables shall be investigated using PIV as far as possible and quantized where applicable. Process diagnostic systems with a large measuring volume for kinematic values are Particle...
Proceedings Papers

ITSC1998, Thermal Spray 1998: Proceedings from the International Thermal Spray Conference, 523-527, May 25–29, 1998,
... law. process provides more qualitative coatings because of Plasma jet model. There is a gas jet moving in the considerable decrease of particle oxidization when heating and moving in plasma flow as well as interaction with the direction of x axis with Ux) velocity (Fig. I). The gas is substrate [1,2...
Proceedings Papers

ITSC 2015, Thermal Spray 2015: Proceedings from the International Thermal Spray Conference, 538-543, May 11–14, 2015,
... the operation cost of wire arc spray is reported to be approximately nine times smaller than other thermal spray methods [3]. Some studies have focused on numerical investigation of the wire arc process. Hale et al [4] modeled the arc using the assumption of 2D parabolic laminar flow for the arc. They were able...
Proceedings Papers

ITSC 2002, Thermal Spray 2002: Proceedings from the International Thermal Spray Conference, 918-925, March 4–6, 2002,
... on Euler’s equation and use it to investigate the effect of flow regime on the velocity of particles in an oxyfuel jet. Simulations based on typical HVOF operating conditions show large variations in the flow regime in regions of high particle concentration. Unlike other modeling approaches, the Eulerian...
Proceedings Papers

ITSC2000, Thermal Spray 2000: Proceedings from the International Thermal Spray Conference, 125-134, May 8–11, 2000,
... Abstract A three-dimensional model of free-surface flows with heat transfer, including solidification, was used to model the build-up of a coating layer in a thermal spray process. The impact of several nickel particles on a stainless steel plate in different scenarios was considered. Particles...