EXPERIMENTAL INVESTIGATIONS AND COMPUTER SIMULATION OF A PIT ANNEALING FURNACE

1986 ◽  
Author(s):  
A.J. Griffiths ◽  
P.T. Lewis ◽  
A. Brown ◽  
D.L. Williams
Keyword(s):  
Computer Simulation ◽  
Experimental Investigations ◽  
Annealing Furnace

A Computer Simulation Approach for Engineering Air-Jet Spun Yarns

1997 ◽  
Vol 67 (3) ◽  
pp. 223-230 ◽  
Author(s):  
Rangaswamy Rajamanickam ◽  
Steven M. Hansen ◽  
Sundaresan Jayaraman
Keyword(s):  
Computer Simulation ◽  
Computer Simulations ◽  
Fiber Length ◽  
Experimental Investigations ◽  
Simulation Approach ◽  
Air Jet ◽  
Fiber Fineness ◽  
Spun Yarns ◽  
Yarn Count ◽  
Wrap Angle

A computer simulation approach for engineering air-jet spun yarns is proposed, and the advantages of computer simulations over experimental investigations and stand-alone mathematical models are discussed. Interactions of the following factors in air-jet spun yarns are analyzed using computer simulations: yarn count and fiber fineness, fiber tenacity and fiber friction, fiber length and fiber friction, and number of wrapper fibers and wrap angle. Based on the results of these simulations, yarn engineering approaches to optimize strength are suggested.

Experimental investigations of the externally heated valve engine model

2001 ◽  
Vol 215 (4) ◽  
pp. 487-494 ◽  
Author(s):  
L Brzeski ◽  
Z Kazimierski
Keyword(s):  
Computer Simulation ◽  
Measurement System ◽  
External Source ◽  
Time Dependent ◽  
Experimental Investigations ◽  
Pressure Transducers ◽  
Engine Model ◽  
Experimental Stand ◽  
The Subject ◽  
Valve Engine

The experimental investigations of the first model of the externally heated valve engine carried out during 1998-9 are the subject of this paper. The working gas of the engine is air. A detailed description of the engine equipped with two consecutively working heaters is given. Two kinds of heaters were constructed and investigated. The experimental stand and the measurement system are described. In this first stage of the engine investigation, electric radiators were used as the external source of heat. The main aim of the experimental investigations was focused on measurements of time-dependent pressures inside the expander and compressor cylinders. The pressures were measured by means of two kinds of pressure transducers (piezoresistive and piezoelectric) to get confidence in the obtained results. The conducted investigations prove that The engine model has an operating ability. Comparisons of the experimental and theoretical pressures inside the expander and compressor show a satisfactory agreement. It confirms that the engine operates according to the original thermodynamical cycle and exhibits the internal power and efficiency predicted by the computer simulation. The experiences gained during these investigations have been used to modify the engine model, which is outlined in this paper.

Computer Simulation of Diesel Fueled Engine Processes Using MATLAB and Experimental Investigations on Research Engine

2017 ◽  
Author(s):  
Shankar Venkataraman ◽  
Reghu Ramawarrier ◽  
Vivek Kozhikkoottungal Satheesh ◽  
Nikhil Mathew Mundupalam ◽  
Siddaling Bhure
Keyword(s):  
Computer Simulation ◽  
Normal Load ◽  
Simulation Software ◽  
Load Test ◽  
Combustion Model ◽  
Experimental Investigations ◽  
Variable Load ◽  
Combustion Modeling ◽  
Simulation Speed ◽  
Smoke Opacity

The depletion of conventional fuel source at a fast rate and increasing environmental pollution have motivated extensive research in combustion modeling and energy efficient engine design. In the present work, a computer simulation incorporating progressive combustion model using thermodynamic equations has been carried out using MATLAB to evaluate the performance of a diesel engine. Simulations at constant speed and variable load have been carried out for the experimental engine available in the laboratory. For simulation, speed and Air/Fuel ratios, which are measured during the experiment, have been used as input apart from other geometrical details. A state-of-the-art experimental facility has been developed in-house. The facility comprises of a hundred horsepower water cooled eddy current dynamometer with appropriate electronic controllers. A normal load test has been carried out and the required parameters were measured. A six gas analyzer was used for the measurement of NOx, HC, CO2, O2, CO and SOx. and a smoke meter was used for smoke opacity. The predicted Pressure-Volume (PV) diagram was compared with measurements and found to match closely. It is concluded that the developed simulation software could be used to get quick results for parametric studies.

scholarly journals Numerical–Experimental Analysis of Polyethylene Pipe Deformation at Different Load Values

Materials ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 160
Author(s):  
Adam Gnatowski ◽  
Agnieszka Kijo-Kleczkowska ◽  
Mateusz Chyra ◽  
Dariusz Kwiatkowski
Keyword(s):  
Computer Simulation ◽  
Numerical Analysis ◽  
Experimental Analysis ◽  
External Load ◽  
Experimental Studies ◽  
Strain Gauges ◽  
Experimental Investigations ◽  
Polyethylene Pipe ◽  
External Forces ◽  
The Impact

Polymer pipes are used in the construction of underground gas, water, and sewage networks. During exploitation, various external forces work on the pipeline, which cause its deformation. In the paper, numerical analysis and experimental investigations of polyethylene pipe deformation at different external load values (500, 1000, 1500, and 2000 N) were performed. The authors measured strains of the lower and upper surface of the pipe during its loading moment using resistance strain gauges, which were located on the pipe at equal intervals. The results obtained from computer simulation and experimental studies were comparable. An innovative element of the research presented in the article is recognition of the impact of the proposed values of the load of polyethylene pipe on the change in its deformation.

Squeezing Impact Forces of the Deformation on a Cylindrical Roller

2012 ◽  
Vol 229-231 ◽  
pp. 723-726
Author(s):  
I. K. Beisembetov ◽  
Y. N. Oteny ◽  
O. P. Muraviev ◽  
M. R. Sikhimbayev ◽  
B. N. Absadykov ◽  
...  
Keyword(s):  
Computer Simulation ◽  
Plastic Deformation ◽  
Contact Zone ◽  
Elastic Properties ◽  
Experimental Investigations ◽  
Relative Deformation ◽  
Flat Plates ◽  
Elastic Plastic ◽  
Impact Forces ◽  
Cylindrical Roller

The article examines the influence of compressive forces on the deformation of the cylindrical roller. We considered the features of deformation of two cylindrical bodies with identical elastic properties and elastic plastic deformation of the deforming element of the solid parts. Duing the process we calculated deformation of the cylindrical deforming element which is located between the two contracting rigid planar faces of it with a light contact and general deformations. It is shown that the relative deformation of the reels when they are loading does not depend much on the diameter, but depends only on the loading force. It’s produced by computer simulation of compression of a cylindrical roller with two absolutely rigid plates using the software like Pro/E, Solidworks and ANSYS. We obtain the results of experimental investigations of the deformation roller during its compression of flat plates with a hardness of HRC = 65. It was revealed that the deformation roller obtained experimentally is almost identical with the calculated values. It is shown that deformation of the roller shall not exceed two percent of its diameter, and in the calculations determining the parameters of the contact zone can not take into account its deformation.

scholarly journals Power Quality Disturbance Recognition Using VMD-Based Feature Extraction and Heuristic Feature Selection

2019 ◽  
Vol 9 (22) ◽  
pp. 4901 ◽  
Author(s):  
Lei Fu ◽  
Tiantian Zhu ◽  
Guobing Pan ◽  
Sihan Chen ◽  
Qi Zhong ◽  
...  
Keyword(s):  
Computer Simulation ◽  
Feature Extraction ◽  
Feature Selection ◽  
Power Quality ◽  
Negative Impact ◽  
Feature Selection Method ◽  
Permutation Entropy ◽  
Experimental Investigations ◽  
Support Vector ◽  
Fisher Score

Power quality disturbances (PQDs) have a large negative impact on electric power systems with the increasing use of sensitive electrical loads. This paper presents a novel hybrid algorithm for PQD detection and classification. The proposed method is constructed while using the following main steps: computer simulation of PQD signals, signal decomposition, feature extraction, heuristic selection of feature selection, and classification. First, different types of PQD signals are generated by computer simulation. Second, variational mode decomposition (VMD) is used to decompose the signals into several instinct mode functions (IMFs). Third, the statistical features are calculated in the time series for each IMF. Next, a two-stage feature selection method is imported to eliminate the redundant features by utilizing permutation entropy and the Fisher score algorithm. Finally, the selected feature vectors are fed into a multiclass support vector machine (SVM) model to classify the PQDs. Several experimental investigations are performed to verify the performance and effectiveness of the proposed method in a noisy environment. Moreover, the results demonstrate that the start and end points of the PQD can be efficiently detected.

Investigation and Computer Simulation of Diesel Injection System With Rotative Pump

1990 ◽  
Vol 112 (3) ◽  
pp. 317-323 ◽  
Author(s):  
A. Ficarella ◽  
D. Laforgia ◽  
G. Cipolla
Keyword(s):  
Mathematical Model ◽  
Computer Simulation ◽  
Conservation Laws ◽  
Momentum Conservation ◽  
Experimental Results ◽  
Injection System ◽  
Experimental Investigations ◽  
System Behavior ◽  
Diesel Injection ◽  
Theoretical Predictions

The behavior of an injection system with a rotative pump for reciprocating engines has been investigated. Experimental investigations were carried out using a specially designed apparatus to monitor several parameters, such as pressure inside the different chambers of the apparatus, moving part lift, and injected fuel quantity. In addition, a predictive mathematical model, based on mass momentum conservation laws, was developed to simulate such behavior and to predict all the most important parameters of the injection system. The comparison between numerical and experimental results has been satisfactory, allowing a generalization of the model and extensive theoretical predictions of the system behavior.

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