Affecting Study on Flow Regeneration Noise from Muffler Element with Perforated Plate

2013 ◽  
Vol 387 ◽  
pp. 305-309
Author(s):  
Hai Jun Zhao ◽  
Guo Hua Wang
Keyword(s):  
High Frequency ◽  
Design Method ◽  
Orthogonal Experiment ◽  
Perforated Plate ◽  
Expansion Ratio ◽  
Model Parameters ◽  
Orthogonal Experiment Design ◽  
Spectrum Characteristic ◽  
Peak Value ◽  
High Range

Making use of orthogonal experiment design method samples on muffler element with perforated plate are fixed, and a model of total sound power of flow regeneration noise and flow velocity, perforated diameter, expansion ratio, perforated ratio and length of perforated plate to inlet expansion is established, and the model parameters are solved, and quantity research of the noise effect is performed, and spectrum characteristic of flow regeneration noise from the muffler element is analyzed. It is achieved that the perforated diameter and the expansion ratio have important effect on flow regeneration noise, the reducing of the perforated diameter and improving expansion ratio is in favor of the reduction of flow regeneration noise from muffler element with perforated plate, and peak value frequency appears in the middle and high range, and the high frequency may be high velocity air flowing through little holes on the plate.

Effect Factors of Flow Regenerated Noise from Muffler Unit with Simple Expansion

2013 ◽  
Vol 387 ◽  
pp. 323-327
Author(s):  
Hai Jun Zhao ◽  
Xing Guo Zhao ◽  
Guo Hua Wang
Keyword(s):  
Cavity Length ◽  
Velocity Structure ◽  
Design Method ◽  
Orthogonal Experiment ◽  
Expansion Ratio ◽  
Work Piece ◽  
Model Parameters ◽  
Structure Parameters ◽  
Effect Factors ◽  
Simple Expansion

Structure parameters of work piece on muffler unit with simple expansion are determined using orthogonal experiment design method, and relationship model of total sound power of flow regenerated noise and flow velocity structure parameters is built, and the model parameters are solved, and quantity study of effect factors for the noise is performed. Results show that inlet diameter and expansion cavity length have high effect on flow regeneration noise, the reducing of the inlet diameter and improving expansion cavity length is in favor of the reduction of flow regeneration noise from muffler unit with simple expansion, and expansion ratio has less influence on the noise, the reducing of the expansion ratio makes the regenerated noise become less down.

Application of ANN in Preparing Technology of Magnesium Matrix Composites

2011 ◽  
Vol 216 ◽  
pp. 244-249
Author(s):  
Jian Xiong Ye ◽  
Fa Yun Zhang
Keyword(s):  
Traditional Method ◽  
Design Method ◽  
Orthogonal Experiment ◽  
Processing Parameters ◽  
Processing Temperature ◽  
Matrix Composites ◽  
Magnesium Matrix ◽  
Orthogonal Experiment Design ◽  
Magnesium Matrix Composites ◽  
Stirring Time

SiCp/AZ61 matrix composites were fabricated by stirring process in the paper. Different SiC volume fractions, processing temperature and stirring time have different influence on tensile strength and elongation of SiC; it is very difficult to find out the best processing parameters with traditional method. An effective method is demonstrated here: The orthogonal experiment design method is put into use at first, and then a satisfied ANN(Artificial Neural Network) is achieved by help of GA’s(Genetic Algorithm) global optimizing capacity. Experimental results proved the prediction accuracy and the adaptability of our work.

scholarly journals Performance Optimization of High Specific Speed Centrifugal Pump Based on Orthogonal Experiment Design Method

Processes ◽  
2019 ◽  
Vol 7 (10) ◽  
pp. 728 ◽  
Author(s):  
Li ◽  
Ding ◽  
Shen ◽  
Jiang
Keyword(s):  
Centrifugal Pump ◽  
Performance Optimization ◽  
Design Method ◽  
Orthogonal Experiment ◽  
Three Dimensional ◽  
Experiment Design ◽  
Three Dimensional Model ◽  
Pump Design ◽  
Orthogonal Experiment Design ◽  
Specific Speed

A high specific speed centrifugal pump is used in the situation of large flow and low head. Centrifugal pump parameters need to be optimized in order to raise its head and efficiency under off-design conditions. In this study, the orthogonal experiment design method is adopted to optimize the performance of centrifugal pump basing on three parameters, namely, blade outlet width b2, blade outlet angle β2 and blade wrap angle φ. First, the three-dimensional model of the centrifugal pump is established by CFturbo and SolidWorks. Then nine different schemes are designed by using orthogonal table, and numerical simulation is carried out in CFX15.0. The final optimized combination of parameters is b2 = 24 mm, β2 = 24°, φ = 112°. Under the design condition, the head and efficiency of the optimized centrifugal pump are appropriately improved, the increments of which are 0.74 m and 0.48%, respectively. However, the efficiency considerably increases at high flow rates, with an increase of 6.9% at 1.5 Qd. The anti-cavitation performance of the optimized centrifugal pump is also better than the original pump. The results in this paper can provide references for parameter selection (b2, β2, φ) in the centrifugal pump design.

scholarly journals Evaluation of influencing factors on the adaptability of ICD completion technology

2021 ◽  
Vol 261 ◽  
pp. 02071
Author(s):  
Guohui Zhang ◽  
Liangchuan Li ◽  
Rong Chen ◽  
Peng Wang ◽  
Guowen Zhang ◽  
...  
Keyword(s):  
Comprehensive Evaluation ◽  
Design Method ◽  
Orthogonal Experiment ◽  
Horizontal Wells ◽  
Water Production ◽  
Water Control ◽  
Orthogonal Experiment Design ◽  
Factors Affecting ◽  
Well Completion ◽  
Main Index

After years of research and practice, ICD well completion technology has become a relatively mature completion technology, and has been successfully applied in hundreds of horizontal Wells abroad. However, due to many factors affecting ICD effect, mature evaluation methods have not been completely established. At present, the main index of ICD water control development effect is to balance inflow profile and inhibit water production, and the evaluation factors involve reservoir, process and equipment structure. This paper summarizes the factors influencing the effects of ICD, using orthogonal experiment design method to carry on the comprehensive evaluation, and puts forward the corresponding Suggestions

scholarly journals The Assessment of Cutting Force with Taguchi Design in Medium Carbon Steel–Applied Spheroidization Heat Treatment

2017 ◽  
Vol 50 (4) ◽  
pp. 89-96 ◽  
Author(s):  
Şehmus Baday ◽  
Hüdayim Başak ◽  
Fikret Sönmez
Keyword(s):  
Cutting Force ◽  
Feed Rate ◽  
Cutting Forces ◽  
Design Method ◽  
Orthogonal Experiment ◽  
Experiment Design ◽  
Depth Of Cut ◽  
Machining Parameters ◽  
Orthogonal Experiment Design ◽  
Medium Carbon

In this study, the analysis of cutting forces on medium carbon AISI 1050—to which different spheroidization heat treatments were applied—was conducted by the mixed-level Taguchi orthogonal experiment design method. In the experiments, besides the parameters of feed rate, depth of cut and cutting speed having effect on cutting forces as a factor in orthogonal design, the spheroidization time and temperature parameters were also used. By the performed orthogonal experiment design method, the values of cutting forces were estimated using the five-factor, two- and three-leveled Taguchi L36 (22 × 33) mixed orthogonal experiment design method. The effectiveness of the machining parameters on the cutting force was revealed by performing analysis of variance test. Moreover, the effectiveness rates of the parameters were also determined in the study as per the signal noise rates. Consequently, it has been observed that the feed rate is more effective on the cutting forces compared to other parameters.

Modeling of the Calcareous Intercalation in WZ Oilfield

2014 ◽  
Vol 1073-1076 ◽  
pp. 2292-2295
Author(s):  
Ye Chun Lao ◽  
Mao Li ◽  
Xiao Lei ◽  
Meng Ying Dai
Keyword(s):  
Spatial Distribution ◽  
Design Method ◽  
Orthogonal Experiment ◽  
Simulation Method ◽  
Experiment Design ◽  
Orthogonal Experiment Design ◽  
Object Based ◽  
Major Factors

Interlayer is one of the major factors which results in the heterogeneity of reservoir, and it is the important content of reservoir fine characterization. In this paper, taking WZ oilfield as an example, the object-based simulation method is used to characterize the spatial distribution regularity of calcareous intercalation and sand-stone, design the experiment scheme through the orthogonal experiment design method and analysis the factors that influence the distribution of interlayer. Results showed that the object-based simulation method can characterize the shape of calcareous intercalation very well, and the orthogonal experiment design can distinguish the influence of various factors.

Study on Indium Leaching from Indium-Poor Zinc Residue Enhanced by Ultrasonic Treatment

2011 ◽  
Vol 201-203 ◽  
pp. 1770-1773
Author(s):  
Jin Huan Yao ◽  
Xuan Hai Li
Keyword(s):  
Ultrasonic Treatment ◽  
Design Method ◽  
Orthogonal Experiment ◽  
Leaching Rate ◽  
Optimum Conditions ◽  
Range Analysis ◽  
Orthogonal Experiment Design ◽  
Leaching Process ◽  
New Process ◽  
Hcl Solution

In this paper, orthogonal experiment design method was applied to determine the optimum condition for indium leaching from indium-poor zinc residue in HCl solution. Taking the results of range analysis and the situation of industrial production into consideration, the optimum conditions for conventional leaching are: reaction temperature 70°C, concentration of HCl 6 mol/L, leaching time 1.0 h, and ratio of liquid to solid 8:1. Under the optimum conditions, ultrasonic was used to enhance the leaching process. Compared with the conventional leaching process, this new process can provide better indium recovery, shorter leaching time, and faster leaching rate. The indium extraction of indium-poor zinc residue with ultrasonic treatment is up to 96 %, which is 31.0 % higher than that without ultrasonic treatment. In addition, the normal agitation improves the diffusion of solution in the ultrasonically enhanced leaching experiment.

Optimization on Resistance Microwelding Procedure of Fine Copper Wire Based on Orthogonal Experiment Design

2011 ◽  
Vol 418-420 ◽  
pp. 1448-1451 ◽  
Author(s):  
Ping Chen ◽  
Zhong Ning Guo ◽  
Bing Hua Mo
Keyword(s):  
Design Method ◽  
Copper Wire ◽  
Orthogonal Experiment ◽  
Thin Sheet ◽  
Welding Current ◽  
Experiment Design ◽  
Surface Appearance ◽  
Orthogonal Experiment Design ◽  
Weld Time ◽  
Fine Copper

In this paper, an orthogonal experiment design method has been used to optimize the resistance microwelding (RMW) parameters for the fine copper wire and SUS304 stainless steel thin sheet welds. A L25(56) orthogonal array for three factors (welding current, weld time and electrode force) with five levels was used. Joint breaking force (JBF) and surface appearance were selected as the index of evaluation. The results show that welding current was the most influencing parameter on both joint strength and surface appearance, and weld time had the next most significant effect. The orthogonal experiment design method was proved to be a promising technique to obtain the optimum conditions for RMW of fine copper wire.

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