-
The Influence of Balance Hole Position of Water Pump on Axial Force and External Characteristics
Issue:
Volume 4, Issue 2, March 2016
Pages:
21-24
Received:
24 February 2016
Accepted:
5 March 2016
Published:
17 March 2016
Abstract: The method of balancing the axial force of water pump by balance hole is taken as a research object. Based on the combined CFD technology and experimental research, the relationship between the radial position of balance hole and the effect of axial force, external characteristics of the pump is studied in-depth. Research shows that, the effect of balance hole location on the axial force and the external characteristics have certain law, which effect is significant in balancing the interior pressure; with the increase of radial radius of the balance hole location, the overall balance of interior pressure is increased, the greater the axial force is; the smaller radial radius is, the better the effect of axial force balance is, but leakage may increase and the stroke and efficiency is decreased slightly.
Abstract: The method of balancing the axial force of water pump by balance hole is taken as a research object. Based on the combined CFD technology and experimental research, the relationship between the radial position of balance hole and the effect of axial force, external characteristics of the pump is studied in-depth. Research shows that, the effect of ...
Show More
-
Isolation of Pseudomonas fluorescens Species from Rhizospheric Soil of Healthy Faba Bean and Assessed Their Antagonistic Activity Against Botrytis fabae (Chocolate Spot Diseases)
Issue:
Volume 4, Issue 2, March 2016
Pages:
25-34
Received:
11 June 2015
Accepted:
19 June 2015
Published:
19 March 2016
Abstract: Crop protection is an important area of agriculture which needs attention because of most of the hazardous inputs added into the agricultural system are in the form of chemicals. Production of the crop is, however, constrained by several disease infections including fungal diseases. The present study, was isolate twelve Pseudomonas fluorescens isolates from rhizospheric soil of faba bean and were tested for their antagonistic activity against Botrytis fabae that is known to attack faba bean crops. All Pseudomonas fluorescens isolates are shown successfully employed in controlling chocolate spot diseases of plant. Pseudomonas fluorescens isolates 10 (88.1%) showed highest antagonistic activity against Botrytis fabae. All isolate of Pseudomonas fluorescens are indicated successfully employed in controlling chocolate spot diseases of plant due to their antifungal metabolites. Therefore, these isolates can be used as potential of biocontrol agents.
Abstract: Crop protection is an important area of agriculture which needs attention because of most of the hazardous inputs added into the agricultural system are in the form of chemicals. Production of the crop is, however, constrained by several disease infections including fungal diseases. The present study, was isolate twelve Pseudomonas fluorescens isol...
Show More
-
3D Parametric Modelling of Milling Cutter Geometry from Analytical Analysis
A. Nasri,
J. Slaimi,
W. Bouzid Sai
Issue:
Volume 4, Issue 2, March 2016
Pages:
35-40
Received:
24 October 2015
Accepted:
9 November 2015
Published:
12 April 2016
Abstract: Numerical simulation of milling process needs an accurate model of cutting tool. In this paper, we describe the methodology developed to design flat and ball end mills in three-dimensional configuration. The geometry of these cutters is issued from an analytic study based on oblique cutting theory. The described model is performed by using parametric CAD software. Hence, it involves a big number of variables as the diameter, the helix, the rake and the clearance angles and the teeth number. Furthermore, the modelled cutters are compared to real scanned ones in order to validate the used methodology. The results show a good accuracy regarding the global three-dimensional shape.
Abstract: Numerical simulation of milling process needs an accurate model of cutting tool. In this paper, we describe the methodology developed to design flat and ball end mills in three-dimensional configuration. The geometry of these cutters is issued from an analytic study based on oblique cutting theory. The described model is performed by using parametr...
Show More
