脑部穴位Tutorial 4: Tube morphing
RBF Morph for FLUENT Current Relea: V1.5
霍兰德职业兴趣量表TABLE OF CONTENTS
1.Introduction (3)
2.Prerequisites (3)
3.Problem description (3)
4.First solution: translating the tube extremities (4)
4.1Preparation (4)
4.2Source points definition and preview (4)
4.3Generating and checking the solution (10)
4.4Morph testing (15)
4.5Saving the solution (16)
5.Second solution: scaling the central portion of the tube (16)
5.1Preparation (16)
5.2Adjusting the solution t-up and preview the solution (17)
5.3Morph testing and saving the solution (19)
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6.Third solution: tube morphing using Points (20)
6.1Preparation (20)
6.2Defining the domain encapsulation (20)
6.3Morph testing and saving the solution (27)
7.Summary (27)
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1. Introduction
This RBF-Morph tutorial is termed "Tube morphing" and has the purpo to supply the guidelines for tting up and solving a morph study by means of the Encaps and Points features.
This tutorial demonstrates how to do the following:
∙morph a model by using moving encaps only;
∙morph a model by using the Points feature only;
∙generate Points utilizing the source points of an encap;
∙generate, check, and save the solution.
2. Prerequisites
Requirements for working this tutorial:
1. you are working in the directory where the tutorial problem resides;
2. you have just started the Fluent-GUI application;
涵田半山温泉3. you have done and adequately understood the previous tutorials.
3. Problem description
The ca study, ud for hemodynamics applications [R 1], is a single vesl reprented by a straight pipe with circular cross ction. The pipe length is 30 mm, its diameter is 4 mm, and the volume mesh is compod of about 200.000 hexahedrons (int_solid surface). The surface mesh of surfaces of the model is reported in Figure 1. The external surfaces on the model are termed inlet, outlet, tube-half-1, and tube-half-2, whilst the internal ones are called midplane and x15. The latter surfaces, in particular, are the longitudinal and transversal mid-ction surfaces of the volume mesh.
Figure 1: Surface mesh of surfaces of the tube model
As already stated, this tutorial aims at describing how a model can be morphed using the functionalities of the Encaps and Points panel of RBF Morph. In particular, relating to Encaps, two are the actions of interest, namely the translation and scaling of the central portion of the tube. The final part of the tutorial illustrates the way to create Points from the source points of a previously defined encap and how the model can be morphed by modifying their position.
4. First solution: translating the tube extremities
The first solution forees the translation of tube extremities along the z axis. To do that, both ends of the pipe are fixed using a moving encap with a rigid translation movement, whereas the central domain of the pipe is wrapped by means of a moving encap with a null rigid movement. In such a manner, the model of the pipe will be accordingly deformed to accommodate the displacements.
4.1 Preparation
After starting Fluent from the directory containing the tutorial files:
∙read the test ca tut_04_;
游泳运动∙open the RBF Morph GUI via the menu Define -> RBF-Morph;阿玛尼价格
∙load the library by clicking on Enable RBF Model.
Once the library is completely loaded, the panel illustrated in Figure 2 should appear.
Figure 2: Config panel
4.2 Source points definition and preview
In the first ca of study, the intent is to define Encaps entities only, in such a manner to suitably impo the displacement of 2 mm along z axis of the extremities of the tube model. In this view, thre
e moving encaps are created. The first two have a rigid motion along z axis, whereas the third one has a null rigid movement.
Considering the afore described approach, start the tting up switching to the Encaps panel in the Main sidebar, lect moving in the list of available encaps, and define 3 items acting on the arrows of the Number of Items field as depicted in Figure 3.
Figure 3: Encaps panel
The t-up can proceed as follows.
∙for the Item 1 in the encapsulation Type lect box;
∙in the Resolution field t 0.001;
∙in the Select Parts list lect inlet surface (as shown in Figure 4 on the left) and click on Setup From Parts button (in ca you want to e the item creation at the actual stage of the procedure press the Disp button);
世界上最长的山脉∙t the increment value of 0.001 for DX, DY, and DZ fields;
∙press the + button two times;
∙to prescribe the motion of the current item, click on the Set M button to open the Set Motion panel as shown in Figure 4 on the right. The wanted rigid motion is prescribed by tting the DZ value to 0.002 and confirming by pressing the Set button. Clo Set Motion panel by clicking on the OK button;
∙accept the t-up of the Item 1 by pressing the Set button.
