Results of a check of the p-T sublimation curve equation

1980 ◽  
Vol 23 (7) ◽  
pp. 625-629
Author(s):  
M. K. Zhokhovskii
Keyword(s):  
Curve Equation ◽  
Sublimation Curve

Considering the impact of intermittent discharges when modelling overflows

1998 ◽  
Vol 38 (10) ◽  
pp. 23-30
Author(s):  
Sarah Jubb ◽  
Philip Hulme ◽  
Ian Guymer ◽  
John Martin
Keyword(s):  
Water Quality ◽  
Dissolved Oxygen ◽  
Preliminary Investigation ◽  
Oxygen Demand ◽  
Sediment Oxygen Demand ◽  
Combined Sewer Overflows ◽  
River Hydraulics ◽  
Combined Sewer ◽  
The Impact ◽  
Curve Equation

This paper describes a preliminary investigation that identified factors important in the prediction of river water quality, especially regarding dissolved oxygen (DO) concentration. Intermittent discharges from combined sewer overflows (CSOs) within the sewerage, and overflows at water reclamation works (WRW) cause dynamic conditions with respect to both river hydraulics and water quality. The impact of such discharges has been investigated under both wet and dry weather flow conditions. Data collected from the River Maun, UK, has shown that an immediate, transient oxygen demand exists downstream of an outfall during storm conditions. The presence of a delayed oxygen demand has also been identified. With regard to modelling, initial investigations used a simplified channel and the Streeter-Phelps (1925) dissolved oxygen sag curve equation. Later, a model taking into account hydrodynamic, transport and dispersion processes was used. This suggested that processes other than water phase degradation of organic matter significantly affect the dissolved oxygen concentration downstream of the location of an intermittent discharge. It is proposed that the dynamic rate of reaeration and the sediment oxygen demand should be the focus of further investigation.

A Simple Synthesis Method for Spherical 4R Linkages Reaching Four Positions

2011 ◽  
Vol 199-200 ◽  
pp. 1236-1239 ◽  
Author(s):  
Tong Yang ◽  
Jian You Han ◽  
Lai Rong Yin
Keyword(s):  
Matrix Method ◽  
Synthesis Method ◽  
Simple Synthesis ◽  
Simple Derivation ◽  
Derivation Method ◽  
Curve Equation ◽  
Linkage Synthesis

For spherical 4R linkage synthesis reaching four specified task positions, we introduce a simple derivation method of spherical Burmester curve equation by employing a displacement matrix method. Then we presented a method to calculate the coordinates of circle and center points, so the spherical Burmester curves can be drawn by the software developed.

Research on Solving Method for Tooth Crest Curve of Spiral Bevel Gear under Form Milling

2010 ◽  
Vol 139-141 ◽  
pp. 1255-1259
Author(s):  
Xiu Ting Wei ◽  
Jing Cheng Liu ◽  
Qiang Du
Keyword(s):  
Coordinate System ◽  
Process Simulation ◽  
Machining Process ◽  
Geometric Transformation ◽  
Spiral Bevel Gear ◽  
Bevel Gears ◽  
Machining Process Simulation ◽  
System 2 ◽  
Spiral Bevel ◽  
Curve Equation

Combining the machining process simulation on UG NX software and the mathematically analysis, a new solving method for the tooth crest curve equation of spiral bevel gears is proposed in this paper. The steps are as follows:1) Establishing the gear blank cone equation in the original coordinate system; 2) Finding the gear convex and concave profile equations in the new coordinate system; 3) Integrating the original coordinate system and the new one through geometric transformation and then deducing the tooth crest curve equations on both sides. The equations will help calculate the cutter’s position and pose in addendum chamfering process, with the chamfer automation achieved.

On a Nonelementary Progress Curve Equation and Its Application in Enzyme Kinetics

2002 ◽  
Vol 42 (2) ◽  
pp. 157-161 ◽  
Author(s):  
Marko Goličnik
Keyword(s):  
Enzyme Kinetics ◽  
Progress Curve ◽  
Curve Equation

scholarly journals Motion of Multiple Robot in a Curved Boundary & Obstacles

2019 ◽  
Vol 9 (1) ◽  
pp. 6011-6014
Keyword(s):  
Curve Fitting ◽  
The Other ◽  
Multiple Robots ◽  
Curved Boundary ◽  
Medical Supplies ◽  
Straight Line ◽  
Multiple Robot ◽  
Assembly Operations ◽  
Curve Equation ◽  
Made In

An attempt is made in this paper to gain the flexibility of movement of robots around the boundary of the workspace, where in many robots are moving at a time in the presence of the static curved obstacles. The boundary of the workspace may be a straight line or curve shaped. The obstacle may be polygonal or curved shaped. A program is developed for the motion of the multiple robots to move from its origin location to the desired location without colliding with the boundary, the other moving robots and the static obstacles. The program is based on the curve fitting technique. As and when the robot comes close to the curved boundary or curved barrier, it will trace the path formed by the curve equation using the technique of curve fitting. Since there are multiple robots, the path planning ensures the robots to reach their targets in minimum time. During tracing the path, if more than one robot is following the same path, priority is assigned to such robots. Multiple robots finds application in assembly operations, medical supplies and meals to patients, disinfecting the rooms for patients etc.

A Computational Technique to Generate Coupler Curve Equation of 6-bar Mechanism

2021 ◽  
pp. 349-356
Author(s):  
Khalid Nafees ◽  
Mohd. Qamar Tanveer ◽  
Ajay Mahendru ◽  
Anil P. Singh
Keyword(s):  
Computational Technique ◽  
Curve Equation

GEOMETRIC CONSTRAINTS AND INTERFERENCE-PROOF CONDITIONS OF HELIX-CURVE MESHING-WHEEL MECHANISM

2015 ◽  
Vol 39 (1) ◽  
pp. 13-28 ◽  
Author(s):  
Yangzhi Chen ◽  
Jiang Ding ◽  
Yueling Lv
Keyword(s):  
Parameter Selection ◽  
Space Curve ◽  
Geometric Parameters ◽  
Geometric Constraints ◽  
Contact Curve ◽  
Gear Mechanism ◽  
Curve Equation ◽  
Selection Of

In some recent publications, a gear mechanism named Space-Curve Meshing-Wheel (SCMW) has been proposed by the present authors. This paper presents the geometry of the Helix-Curve Meshing-Wheel (HCMW), the most common SCMW at present. The driven contact curve equation is optimized by removing a redundant length parameter. Then, both geometric constraints and interference-proof conditions are calculated in the following three aspects: contact curves, HCMW pair and HCMW train. A parameter selection of a novel reducer with HCMW trains is shown as a practical example. The theories in this paper are mainly applied to determine the feasibility range of the geometric parameters within the HCMW, and provide foundation to its industrial standardized production.

Design of Pitch Curve of Internal-Curved Planet Gear Pump Strain in Type N-G-W Based on Three-Order Ellipse

2013 ◽  
Vol 787 ◽  
pp. 567-571
Author(s):  
Chao Wang ◽  
Zhen Hui Luan ◽  
Wei Peng Gao
Keyword(s):  
Elliptic Equation ◽  
Design Process ◽  
Planetary Gear ◽  
Gear Pump ◽  
Order Elliptic Equation ◽  
Closed Curves ◽  
Planet Gear ◽  
Gear Ring ◽  
Pitch Curve ◽  
Curve Equation

In N-G-W type non-circular planetary gear strain, the planetary gear is meshed both with the center wheel and the inner gear ring. The parameters which the design of the planetary wheel system required can be received according to the three-order elliptic equation which consist of continuous smooth closed curves as the pitch curve equation of the center wheel, and on the basis of planetary gear teeths relation, the closed condition of the pitch curve and the teeth uniformly distributed in the curve. This paper studied the design process of the pitch curve on an N-G-W type internal-curve planet gear pump by a practical example.

Study on Prediction Deflection of at the Girder Midspan of Large Tonnage Gantry Crane Rigid Legs

2014 ◽  
Vol 628 ◽  
pp. 214-218
Author(s):  
Da Peng Zhang ◽  
Wen Ming Cheng ◽  
Kun Cai
Keyword(s):  
Bending Moment ◽  
Moment Of Inertia ◽  
Load Test ◽  
Test Method ◽  
Gantry Crane ◽  
Deflection Curve ◽  
Concentrated Load ◽  
Small Load ◽  
Curve Equation

It is the most important inspection index of the deflection value for the girder of gantry crane under rated load in the overall test. In the overall test for large tonnage gantry crane which prepared for experimental weight is very difficult at the site, or even impossible perform test. In the text, it is deduced the girder deflection curve equation where considering the effects of the leg bending moment to the girder deflection When the concentrated load is applied to the position of L/2,L/3 and 2L/3 of the girder. The girder deflection value can be obtained under small load at the position of L/2,L/3 and 2L/3 of the girder and the actual moment of inertia of the girder and two side leg can be obtained. In this way, the deflection of the large tonnage gantry crane are predicted through the data of the three-position method in the small load test. Three-position small load test method provides a practical and effective method for the prediction of the girder deflection of large tonnage gantry structure.

Mathematical Model for Tension of Textile during the Process of Supercritical Fluids Spray Dyeing

2014 ◽  
Vol 951 ◽  
pp. 37-40
Author(s):  
Ming Lu Wang ◽  
Wei Qiang Wang
Keyword(s):  
Supercritical Fluids ◽  
Theoretical Basis ◽  
Deformation Curve ◽  
Actual Process ◽  
Mechanical Equilibrium ◽  
Transformation Parameter ◽  
Obvious Effect ◽  
Simulating Analysis ◽  
Curve Equation

The tension, caused by the high pressure jet when it`s sprayed on the textile, has obvious effect on the strength and dyeing quality of textile during the process of supercritical fluids spray dyeing. Based on the mechanical equilibrium of infinitesimal element, at the premise of considering the elasticity of textile, the parameter equations were built by introduced the transformation parameter. The internal tension and simplified deformation curve equation of textile were obtained by the Newton method. The simulating analysis may provide a theoretical basis and guidance for the actual process of supercritical fluid spray dyeing.

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