完結(jié)通風(fēng)管道加工的阻力平衡的有效方法

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一、要害詞的界說

1、 Definition of Key Words

節(jié)點的編號規(guī)則.為了能依據(jù)各節(jié)點間的邏輯關(guān)系,便當(dāng)?shù)夭閷わL(fēng)道體系的各個環(huán)路,咱們給各個節(jié)點一個數(shù)字編號,并對節(jié)點編號作如下假定:按風(fēng)量遞減方向?qū)?jié)點從小到大編號,或都說關(guān)于送風(fēng)體系則節(jié)點編號沿氣流方向遞加

The numbering rules for nodes. In order to easily search for the various loops of the air duct system based on the logical relationship between each node, we give each node a numerical number and make the following assumption for node numbering: number nodes from small to large in the direction of decreasing air volume, or for air supply systems, node numbering increases along the direction of air flow

二、通風(fēng)管道體系各環(huán)路的主動排序

2、 Active sorting of each loop in the ventilation duct system

通風(fēng)管道體系各環(huán)路的主動排序是完結(jié)阻力平衡主動核算的條件,也是本程序的要害進程之一.其進程實踐上便是依照各環(huán)路的阻力丟掉巨細(xì)進行主動排序的進程.通過排序能夠較好的處理如下兩個問題:①能夠依據(jù)排序效果直接選取體系的Z倒霉環(huán)路;②確實削減各環(huán)路阻力平衡時的重復(fù)核算

The active sorting of each loop in the ventilation duct system is a condition for achieving resistance balance and active calculation, and it is also one of the key processes of this program. In practice, the process is to actively sort the resistance of each loop according to its size. Sorting can effectively handle the following two problems: ① selecting the Z unlucky loop of the system directly based on the sorting effect; ② Indeed, reducing the redundant calculation of resistance balance in each loop

體系各環(huán)路的主動排序的詳細(xì)履行進程如下:①主動選取結(jié)尾節(jié)點;②依次搜索每一個結(jié)尾節(jié)點對應(yīng)的環(huán)路途徑并同步核算其阻力丟掉值;③按阻力丟掉值從大到小對一切環(huán)路進行擺放

The detailed implementation process of the active sorting of each loop in the system is as follows: ① Actively selecting the ending node; ② Search sequentially for the loop path corresponding to each ending node and synchronously calculate its resistance loss value; ③ Arrange all loops in descending order of resistance drop values

三、各環(huán)路的阻力平衡

3、 Resistance balance of each loop

阻力平衡是整個風(fēng)管規(guī)劃進程中Z煩瑣,也是Z要害的一步.在此選用按環(huán)路阻力值從大到小的次序依次對各環(huán)路進行平衡,并對業(yè)已進過平衡的管段不再進行調(diào)整,可較好的處理平衡進程中的重復(fù)核算問題.為了便于核算,咱們假設(shè)風(fēng)管支路中需調(diào)整的各管段其調(diào)整前后阻力值份額堅持不變,而調(diào)整前后管徑與阻力值之間的關(guān)系為

Resistance balance is a tedious and crucial step in the entire process of air duct planning. Here, we choose to balance each loop in descending order of resistance values, and no longer adjust the sections that have already been balanced, which can better handle the problem of repeated accounting in the balance process. For the sake of accounting, we assume that the resistance value share of each section in the air duct branch that needs to be adjusted remains unchanged before and after adjustment, The relationship between the diameter of the pipe before and after adjustment and the resistance value is

阻力平衡前后風(fēng)管支路的管徑;p、p:阻力平衡前后Z倒霉環(huán)路上對應(yīng)風(fēng)管支路的阻力值

The diameter of the air duct branch before and after resistance balance; p. P: Resistance value of the corresponding air duct branch on the Z unlucky loop before and after resistance balance

阻力平衡主動核算時,將環(huán)路中現(xiàn)已調(diào)整的管段途徑及阻力丟掉值除掉,并對未經(jīng)調(diào)整的支路按式中對各管段核算出經(jīng)阻力平衡后的管徑d,由d核算出對應(yīng)的速度v及管段阻力δ

When actively calculating resistance balance, the already adjusted pipeline routes and resistance drop values in the loop are removed, and for the unadjusted branch, the diameter d of each pipeline segment after resistance balance is calculated according to the formula, and the corresponding velocity v and pipeline resistance are calculated based on d δ

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