Computer Simulation Framework for Flatfish Aquaculture

2007 ◽  
Author(s):  
Heetaek Ceong ◽  
Kyehwa Park ◽  
Sungju Jung
Keyword(s):  
Computer Simulation ◽  
Simulation Framework

Computer Modeling and Simulation Framework for Particulate Spray Based Manufacturing Processes

2013 ◽  
Author(s):  
Debanjan Mukherjee ◽  
Tarek Zohdi
Keyword(s):  
Computer Simulation ◽  
Particle Dynamics ◽  
Spray Forming ◽  
Individual Particle ◽  
Physical Models ◽  
Computational Techniques ◽  
Manufacturing Processes ◽  
Simulation Framework ◽  
Particulate Media ◽  
The Media

Particulate media are ubiquitous in modern manufacturing processes. These include spray-forming, abrasive finishing, and sintering based processes amongst others. All of these processes involve a flowing stream of discrete, particulate media. For these processes, the aggregate behavior originating from the individual particle or grain dynamics is of critical importance from a process engineering perspective. The discrete nature of the media poses unique challenges in formulating direct continuum theories. This motivates investigating appropriate discrete computational techniques. In this paper, we present a computer simulation framework based on collision driven particle dynamics to investigate the engineering of such manufacturing processes. This is part of an ongoing work on developing a general-purpose computer simulation tool to analyze the dynamics of particulate and granular media in engineering applications. This paper presents the overall framework and the underlying physical models. In particular, our focus is on modeling individual particle-based phenomena (including collisions, heat-exchange, and energy loss) and deriving the aggregate response of the media from individual particle dynamics. The technique is demonstrated using a numerical example for a spray coating deposition process. This example tracks the particulate behavior from the nozzle opening downstream until impact with substrate. Such investigations are useful to understand the effect of process parameters on the engineered output — which in this case entails the properties of the surface coating. The simulation is found to be reasonable in performance time.

The Virtual Design Team: A Computer Simulation Framework for Studying Organizational Aspects of Concurrent Design

SIMULATION ◽  
1995 ◽  
Vol 64 (3) ◽  
pp. 160-174 ◽  
Author(s):  
Yan Jin ◽  
Raymond E. Levitt ◽  
John C. Kunz ◽  
Tore R. Christiansen
Keyword(s):  
Computer Simulation ◽  
Concurrent Design ◽  
Design Team ◽  
Simulation Framework ◽  
Virtual Design ◽  
Virtual Design Team

A Sensor Simulation Framework for Training and Testing Robots and Autonomous Vehicles

2021 ◽  
Vol 1 (2) ◽  
Author(s):  
Asher Elmquist ◽  
Radu Serban ◽  
Dan Negrut
Keyword(s):  
Computer Simulation ◽  
Autonomous Vehicles ◽  
Autonomous Vehicle ◽  
Sensor Data ◽  
Simulation Framework ◽  
Unstructured Environments ◽  
Physics Simulation ◽  
Virtual Sensing ◽  
Simulation Task ◽  
Reduced Scale

Abstract Computer simulation can be a useful tool when designing robots expected to operate independently in unstructured environments. In this context, one needs to simulate the dynamics of the robot’s mechanical system, the environment in which the robot operates, and the sensors which facilitate the robot’s perception of the environment. Herein, we focus on the sensing simulation task by presenting a virtual sensing framework built alongside an open-source, multi-physics simulation platform called Chrono. This framework supports camera, lidar, GPS, and IMU simulation. We discuss their modeling as well as the noise and distortion implemented to increase the realism of the synthetic sensor data. We close with two examples that show the sensing simulation framework at work: one pertains to a reduced scale autonomous vehicle and the second is related to a vehicle driven in a digital replica of a Madison neighborhood.

scholarly journals A diachronic perspective on peer disagreement in veritistic social epistemology

Synthese ◽  
2018 ◽  
Vol 197 (10) ◽  
pp. 4475-4493
Author(s):  
Erik J. Olsson
Keyword(s):  
Computer Simulation ◽  
Social Epistemology ◽  
Main Issue ◽  
Simulation Framework ◽  
Peer Disagreement ◽  
Simulation Techniques ◽  
Meta Level ◽  
Veritistic Value ◽  
Bayesian Simulation ◽  
Over Time

Abstract The main issue in the epistemology of peer disagreement is whether known disagreement among those who are in symmetrical epistemic positions undermines the rationality of their maintaining their respective views. Douven and Kelp have argued convincingly that this problem is best understood as being about how to respond to peer disagreement repeatedly over time, and that this diachronic issue can be best approached through computer simulation. However, Douven and Kelp’s favored simulation framework cannot naturally handle Christensen’s famous Mental Math example. As a remedy, I introduce an alternative (Bayesian) simulation framework, Laputa, inspired by Alvin Goldman’s seminal work on veritistic social epistemology. I show that Christensen’s conciliatory response, reasonably reconstructed and supplemented, gives rise to an increase in epistemic (veritistic) value only if the peers continue to recheck their mental math; else the peers might as well be steadfast. On a meta-level, the study illustrates the power of Goldman’s approach when combined with simulation techniques for handling the computational issues involved.

The Analysis and Evaluation Method of Network Performance and the Method Study of Computer Simulation

2014 ◽  
Vol 556-562 ◽  
pp. 5752-5755
Author(s):  
Rong Hua Tan
Keyword(s):  
Computer Simulation ◽  
Analytical Method ◽  
Network Performance ◽  
Evaluation Method ◽  
Computer Network ◽  
Simulation Method ◽  
Simulation Framework ◽  
Main Method ◽  
Analysis And Evaluation ◽  
Latency Jitter

Generally, the methods to evaluate network performance include analytical method, numerical method and simulation method. Nowadays, emulation is the main method to analyse computer network communication system. This paper discusses a general approach to evaluate network performance which includes bandwidth, latency, jitter, throughput and computer simulation method to analyse LAN performance. A network simulation framework is also introduced in this paper.

Characterization of Modulated Structure Through Structure Images and their Computer Simulation

1990 ◽  
Vol 48 (1) ◽  
pp. 70-71
Author(s):  
Kiyomichi Nakai ◽  
Yusuke Isobe ◽  
Chiken Kinoshita ◽  
Kazutoshi Shinohara
Keyword(s):  
Computer Simulation ◽  
High Resolution ◽  
Spherical Aberration ◽  
High Resolution Electron Microscopy ◽  
Basic Mechanism ◽  
Objective Lens ◽  
Specimen Thickness ◽  
Transmitted Beam ◽  
Modulated Structure ◽  
Resolution Electron

Induced spinodal decomposition under electron irradiation in a Ni-Au alloy has been investigated with respect to its basic mechanism and confirmed to be caused by the relaxation of coherent strain associated with modulated structure. Modulation of white-dots on structure images of modulated structure due to high-resolution electron microscopy is reduced with irradiation. In this paper the atom arrangement of the modulated structure is confirmed with computer simulation on the structure images, and the relaxation of the coherent strain is concluded to be due to the reduction of phase-modulation.Structure images of three-dimensional modulated structure along <100> were taken with the JEM-4000EX high-resolution electron microscope at the HVEM Laboratory, Kyushu University. The transmitted beam and four 200 reflections with their satellites from the modulated structure in an fee Ni-30.0at%Au alloy under illumination of 400keV electrons were used for the structure images under a condition of the spherical aberration constant of the objective lens, Cs = 1mm, the divergence of the beam, α = 3 × 10-4 rad, underfocus, Δf ≃ -50nm and specimen thickness, t ≃ 15nm. The CIHRTEM code was used for the simulation of the structure image.

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