scholarly journals Evaluation of the Safety of High-Salt Wastewater Treatment in Coal Chemical Industry Based on the AHP Fuzzy Method

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Shijun Guo ◽  
Shubham Sharma ◽  
Alibek Issakhov ◽  
Nima Khalilpoor
Keyword(s):  
Process Simulation ◽  
Parallel Flow ◽  
High Salt ◽  
Main Trend ◽  
Fuzzy Mathematics ◽  
Chemical Product ◽  
Simulation Process ◽  
Evaluation Algorithm ◽  
Experimental Values ◽  
Biodiesel Industry

Aim. Epichlorohydrin (ECH) is a widely used chemical product. The production of glycerol has its irreplaceable advantages. With the development of biodiesel industry, it will become the main trend of ECH production in the future. Methods. A vacuum evaporation device is built to investigate the effect of evaporation on the treatment of this kind of high-salt wastewater, and the feasibility of the thermodynamic equation of the simulation process is verified. Process. An AHR fuzzy mathematics evaluation algorithm is used to compare experimental values with simulated numerical values in brine. Results and Conclusions. In the multieffect evaporation process simulation with glycerin-containing brine, the amount of salt precipitated by unit steam energy is arranged in order from more to less than that of seven-effect parallel flow evaporation, is greater than five-effect parallel flow evaporation, and is larger than three-effect parallel flow evaporation, which shows that the increase of validity number is beneficial to the utilization of heat.

scholarly journals RESEARCH ON RULES-BASED BUSINESS PROCESS MODELLING AND SIMULATION / TAISYKLĖMIS GRINDŽIAMŲ VERSLO PROCESŲ MODELIAVIMO IR SIMULIAVIMO TYRIMAS

2014 ◽  
Vol 6 (2) ◽  
pp. 147-150
Author(s):  
Kęstutis Stankevičius ◽  
Olegas Vasilecas
Keyword(s):  
Business Process ◽  
Process Simulation ◽  
Process Modelling ◽  
Modelling And Simulation ◽  
Business Rules ◽  
Business Process Modelling ◽  
Simulation Process ◽  
Simulation And Modelling ◽  
The Difference ◽  
Manipulation Process

Googling the term “Business Process Simulation” in April 2013 yielded only 42.1 thousand hits. It is not much compared with googling the term such as “Business Process Modelling” in the same time, which yielded approx. 1.470 million hits. That is 35 times more compared to the previous search. The difference between modelling and simulation is arguable. In fact, the terms ‘simulation’ and ‘modelling’ are often used synonymously, but the authors prefer to distinguish between the terms and look at modelling as an act of building a model while simulation is considered an act or even a process of using that model for a specific purpose or study. If simulation is a manipulation process of one or more variables, which can be changed and observed, then this kind of process is best managed and controlled by business rules that can also be manipulated in the simulation process. „Google“ paieškoje įvestas terminas „Business Process Simulation“ 2013 metų balandžio mėn. duoda tik 42,1 tūkst. paieškos rezultatų. Tai nėra daug, palyginti su kitu paieškos terminu „Business Process Modelling“. Tuo pačiu metu reikšminiai paieškos žodžiai duoda apie 1,470 milijono paieškos rezultatų. Tai 35 kartus daugiau, palyginti su prieš tai daryta paieška. Galima ginčytis, ar yra skirtumas tarp modeliavimo ir simuliavimo? Iš tiesų žodžiai „modeliavimas“ ir „simuliavimas“ dažnai vartojami kaip sinonimai, tačiau straipsnyje siūloma į modeliavimą ir simuliavimą žiūrėti skirtingai, t. y. į modeliavimą kaip į veiksmą, kuris sukuria modelį, į simuliavimą – kaip į veiksmą arba procesą, kuris sudaro sąlygas taikyti šį modelį konkrečiam tikslui arba tyrimui atlikti. Jeigu apibrėžiama, kad simuliavimas yra vieno ar daugiau kintamųjų manipuliacijos procesas, kurį galima pakeisti ir stebėti, tada taip pat galima susitarti, kad šis procesas geriausiai grindžiamas verslo taisyklėmis, kurios gali būti papildomos arba keičiamos simuliavimo proceso metu.

Study on the Maintenance Capacity of “Man-Machine System” Based on Fuzzy Comprehensive Evaluation

2012 ◽  
Vol 203 ◽  
pp. 479-483
Author(s):  
Yong Jun Sun ◽  
Yi Qu
Keyword(s):  
Complex System ◽  
Quantitative Analysis ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Fuzzy Mathematics ◽  
Machine System ◽  
The Core ◽  
Evaluation Algorithm ◽  
The Stability ◽  
Index Weight

This paper, in accordance with the maintenance capacity of “Man-Machine System”, holds the core of the “Man-Machine System” and employs the analysis methods of the complex system, brings forward the model of the three-layer comprehensive evaluation based on fuzzy mathematics, then brings out the methods of the index weight and studies the maintenance capacity’s evaluation algorithm on the foundation of the quantitative analysis. In the last it gives the application of the model and algorithm by using the instances and studies the changing maintenance capacity including the stability and the undulation, which provides one thought for scientifically evaluating the maintenance capacity of “Man-Machine System”.

The Application of DELMIA in ARJ21 Aircraft Central Wing Assembly Simulation

2011 ◽  
Vol 314-316 ◽  
pp. 2287-2292
Author(s):  
Hong Jun Liu ◽  
Xiao Yan Tong ◽  
Sheng Li Lv ◽  
Qing Ming Fan
Keyword(s):  
Process Simulation ◽  
Virtual Assembly ◽  
Assembly Process ◽  
Aircraft Assembly ◽  
Simulation Process ◽  
Assembly Simulation ◽  
Task Simulation

This paper is to explain the application of DELMIA in 3D digital virtual assembly. It takes ARJ21 aircraft central wing assembly simulation process as an example. It introduces the related modules of DELMIA software and discusses the application of DELMIA in aircraft assembly simulation through the central wing assembly process simulation and human task simulation in the ARJ21 aircraft central wing assembly simulation.

scholarly journals ANALISIS RUGI DAYA DAN REKONSILIASI ENERGI JARINGAN DISTRIBUSI TEGANGAN MENENGAH 20 KV PADA PENYULANG NIJANG

2020 ◽  
Vol 4 (3) ◽  
pp. 34-40
Author(s):  
Ahmad Jaya ◽  
Wirentake
Keyword(s):  
Process Simulation ◽  
Power Loss ◽  
Research Method ◽  
Quantitative Research ◽  
Distribution Network ◽  
Power Losses ◽  
Voltage Distribution ◽  
Medium Voltage ◽  
Simulation Process ◽  
Reconciliation Process

This study aims to determine the loss / power loss in the nijang feeder through the energy reconciliation process, simulation of the ETAP 12.6 program, and manual calculations. The benefits of this research can be used as a basis for consideration of the improvement efforts that should be carried out to minimize power losses in the medium voltage distribution network of Nijang feeders. The method used is quantitative research method because it takes data from the measurement of the transaction point which is then compared with the results in the simulation program ETAP 12.6 and manual calculations. The results showed that the power loss (kWh) resulted from 3 processes showed that the energy reconciliation process resulted in a greater power loss, namely 10,657 kWh, the ETAP 12.6 simulation resulted in a power loss of 3049 kWh and in manual calculations it resulted in losses. power of 4199 kWh, from the results of the research it can be seen that in the simulation process ETAP 12.6 and manual calculations only calculate power losses due to technical causes, while the energy reconciliation process includes technical and non-technical causes. It is hoped that this research can support efforts to improve power losses / losses in the PT PLN (Persero) UP3 Sumbawa environment.

scholarly journals Solution of a production process with the application of simulation: A case study

2021 ◽  
Vol 11 (1) ◽  
pp. 1015-1024
Author(s):  
Nikoleta Mikušová ◽  
Milenko Petrović ◽  
Vladimír Mitrik ◽  
Richard Šarišský
Keyword(s):  
Production Process ◽  
Process Simulation ◽  
Material Flow ◽  
Transport Processes ◽  
Flow Problems ◽  
Simulation Process ◽  
New Type ◽  
Simulation Results ◽  
Plant Simulation

Abstract Simulation programs are increasingly being used to solve material flow problems. These programs are primarily used for the simulation of production or transport processes. Testing of a new type of control in-process would mean stopping production and testing experiments with uncertain results. To avoid this lengthy and above all expensive way of any change, simulation programs have been used. Simulations of production processes in these programs enable better production planning and examination of bottlenecks in the production process by proposing changes, such as robots, conveyors, or also various logistics controls. The advantage is not only the fact that the production does not have to be interrupted, but also that it is possible to try many different experiments in a simulation process. The article is focused on the analysis of the production process in a selected production enterprise. After the analysis, the Tecnomatix Plant Simulation program was used for the creation of production process simulation. Results and improvements to the production process were proposed from the initial simulation with a focus on practical use.

Computer-Aided Modeling of a Screw Firmware of the Workpiece and Adequacy Evaluation of Solution Results

2017 ◽  
Vol 265 ◽  
pp. 931-936
Author(s):  
V.A. Toporov ◽  
O. Panasenko ◽  
D.Sh. Nukhov ◽  
Aleksandr Aleksandrovich Bogatov ◽  
K. Pyankov
Keyword(s):  
Contact Surface ◽  
High Stability ◽  
Fem Simulation ◽  
Dimensional Accuracy ◽  
Piercing Mill ◽  
Roller Mill ◽  
Simulation Process ◽  
Thin Walled ◽  
Experimental Values ◽  
Technical Solutions

In the work were set and solved the task of the FEM simulation process, the screw firmware blank on the double roller mill with mushroom-shaped rolls. The decision of the task allowed us to calculate the parameters of the contact surface of the workpiece to roll as well as the analysis of dimensional accuracy of the casings. The adequacy of the models is proved by comparison of calculated and experimental values of the parameters of the contact surface and the sizes of the casings. Implementation of the developed technical solutions for adaptation of a piercing mill in the shop No1 PJSC "STZ" has allowed to provide high stability of the rolling of thin-walled shells with size 328×433 of 20.55 mm x 26,9 mm.

Sign in / Sign up

Export Citation Format

Share Document