Numerical and Analytical Modeling of Laser Deposition With Preheating

2007 ◽  
Author(s):  
Zhiqiang Fan ◽  
Jacquelyn K. Stroble ◽  
Jianzhong Ruan ◽  
Todd E. Sparks ◽  
Frank Liou
Keyword(s):  
Analytical Modeling ◽  
Deposition Process ◽  
Numerical Approach ◽  
Laser Deposition ◽  
Surface Evolution ◽  
Melt Pool ◽  
Solid Models ◽  
Simulation Results ◽  
Analytical Approaches ◽  
Material Interaction

Laser deposition allows quick fabrication of fully-dense metallic components directly from CAD solid models. This work uses both numerical and analytical approaches to model the laser deposition process including actual deposition and preheating. The numerical approach is used to simulate the coupled, interactive transport phenomena during actual deposition. The numerical simulation involves laser material interaction, free surface evolution, and melt-pool dynamics. The analytical approach is used to model heat transfer during preheating. The combination of these two approaches can increase computational efficiency with most of the phenomena associated with laser deposition modeled. The simulation is applied to Ti-6Al-4V and simulation results are compared with experimental results.

scholarly journals Cheating at Craps

2021 ◽  
Vol 48 (4) ◽  
pp. 53-61
Author(s):  
Andrea Marin ◽  
Carey Williamson
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Modeling And Simulation ◽  
Analytical Model ◽  
Quantitative Evaluation ◽  
Mathematical Analysis ◽  
Simulation Modeling ◽  
Analytical Modeling ◽  
The World ◽  
Simulation Results

Craps is a simple dice game that is popular in casinos around the world. While the rules for Craps, and its mathematical analysis, are reasonably straightforward, this paper instead focuses on the best ways to cheat at Craps, by using loaded (biased) dice. We use both analytical modeling and simulation modeling to study this intriguing dice game. Our modeling results show that biasing a die away from the value 1 or towards the value 5 lead to the best (and least detectable) cheating strategies, and that modest bias on two loaded dice can increase the winning probability above 50%. Our Monte Carlo simulation results provide validation for our analytical model, and also facilitate the quantitative evaluation of other scenarios, such as heterogeneous or correlated dice.

Preparation of boron carbide thin film by pulsed KrF excimer laser deposition process

2002 ◽  
Vol 407 (1-2) ◽  
pp. 126-131 ◽  
Author(s):  
Shin-ichi Aoqui ◽  
Hisatomo Miyata ◽  
Tamiko Ohshima ◽  
Tomoaki Ikegami ◽  
Kenji Ebihara
Keyword(s):  
Thin Film ◽  
Boron Carbide ◽  
Excimer Laser ◽  
Deposition Process ◽  
Laser Deposition ◽  
Krf Excimer Laser

Effects of Single-Crystalline GaN Target on GaN Thin Films in Pulsed Laser Deposition Process

2005 ◽  
Vol 44 (11) ◽  
pp. 7896-7900 ◽  
Author(s):  
Takahiro Nagata ◽  
Young-Zo Yoo ◽  
Parhat Ahmet ◽  
Toyohiro Chikyow
Keyword(s):  
Thin Films ◽  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Deposition Process ◽  
Laser Deposition ◽  
Single Crystalline

scholarly journals ANALYSIS OF THE CURRENT STATE OF RESEARCHES OF THE DEPOSITION OF ASPHALT-RESINOUS SUBSTANCES, PARAFFIN, AND MODELING METHODS. REVIEW PART II: WAX DEPOSITION

2021 ◽  
pp. 13-23
Author(s):  
M.R. Manafov ◽  
◽  
G.S. Aliyev ◽  
A.I. Rustamova ◽  
V.I. Kerimli ◽  
...  
Keyword(s):  
Experimental Data ◽  
Kinetic Model ◽  
Deposition Process ◽  
Real Field ◽  
Wax Deposition ◽  
Scaling Effect ◽  
Modeling Methods ◽  
Current State ◽  
Simulation Results ◽  
Reliable Interpretation

The mechanism of paraffin formation in transport pipes is briefly discussed. A kinetic model of the formation and wax deposition from oil is proposed. Comparison of the model with the available experimental data gave satisfactory results. The review considers software tools for modeling the wax deposition process. It is noted that the simulation results are not always applicable to real field cases. For a more reliable interpretation, the scaling effect must be taken into account. In the work various technologies for wax removal are considered

scholarly journals Двумерные брэгговские резонаторы на основе планарных диэлектрических волноводов (от теории к модельному тестированию)

2019 ◽  
Vol 53 (10) ◽  
pp. 1315
Author(s):  
Н.С. Гинзбург ◽  
Н.Ю. Песков ◽  
В.Ю. Заславский ◽  
Е.Р. Кочаровская ◽  
А.М. Малкин ◽  
...  
Keyword(s):  
Narrow Band ◽  
Bragg Reflection ◽  
Dielectric Waveguides ◽  
Wavelength Band ◽  
Reflection Band ◽  
Millimeter Wavelength ◽  
Bragg Structures ◽  
Significant Interest ◽  
Simulation Results ◽  
Analytical Approaches

Using analytical approaches and CST Microwave Studio 3D simulations, we have undertaken a theoretical analysis of electrodynamical characteristics of 2D Bragg structures based on planar oversized dielectric waveguides with double-periodical corrugation. Such structures are of significant interest for obtaining directed narrow-band radiation in heterolasers with large dimensions of an active area. Modeling electrodynamical experiments on 'cold' testing of such structures in millimeter wavelength band were conducted. Fine agreement between the experimental results and the simulation results was demonstrated which includes the presence of the highest-quality mode inside the Bragg reflection band in absence of the periodicity defects.

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