• Aucun résultat trouvé

Chapter 4 (Cont.)

N/A
N/A
Protected

Academic year: 2022

Partager "Chapter 4 (Cont.)"

Copied!
3
0
0

Texte intégral

(1)

Chapter 4 (Cont.)

Depending on assumption(problem type), below terms are neglected 1. Purely axial flow

2. Purely circumferential flow

3. Circumferentially symmetric flow 4. Steady flow

𝑣𝑟 = 𝑣𝜃 = 0

𝜕

𝜕𝜃 = 0

𝜕

𝜕𝑡 = 0

𝑣𝑟 = 𝑣𝑧 = 0

(2)

Chapter 4 (Cont.)

Axial flow problem ->

-> Neglect r & 𝜃 momentum equation -> Consider Z-momentum equation

𝑣𝑟 = 𝑣𝜃 = 0

Boundary condition 1. Pipe wall : No slip

2. Pipe center : zero gradient

(3)

Chapter 4 (Cont.)

Rotating flow problem ->

-> Neglect r & z momentum equation -> Consider 𝜃 -momentum equation

𝑣𝑟 = 𝑣𝑧 = 0

Boundary condition 1. Pipe wall : 𝑣𝜃 = 𝑟𝑤 2. Pipe center :𝑣𝜃 = 0

Références

Documents relatifs

Technique similaire : proc´eder comme avec l’arbre binaire de recherche, puis re- trogradations en ascendant vers la racine + O(1) rotations (trois au plus) `a

TABLE 4.2 Precedence and Associativity of the Numeric Operators... Copyright © 2006

— Toujours le bec ouvert I (probable- ment à cause de certaines discus- sions avec des amis dans des assemblées religieuses ou politi- ques). Je n'ose pas leur dire que j'ai aussi

Contrairement à bien d'autres de vos confrères mal éclairés et mal in- tentionnés, vous donnez de la Police une image noble, digne, lucide et surtout O B J E C T I V E. Leyvraz

Furthermore, relatively high prevalences of any RMP resistance, the most powerful anti-tu- berculosis drug and a key determinant of MDR-TB, were reported among new cases in Henan

These numbers appear also in Gauss theorem on the constructibility (with rule and compas) of regular polygones: a regular polygone with n vertices is constructible if and only if n is

In this thesis, we have st udied a Iorme l software development process thnt uses the forma l specificatio n language called Z, and the formal development method called the

The first order solution of this theory is similar to the classical solutio n discusse d previou sly, In second order, this theory reveals, similar to Fontanet (1961), the existence