zone n. 1.【地理】(地)帶。 2.區(qū)域,范圍,界。 3.〔古、詩(shī)〕(腰)帶。 4.圈,環(huán)帶。 5.【數(shù)學(xué)】(球面)帶;【物理學(xué)】晶帶;晶層。 6.〔美國(guó)〕(為計(jì)算郵包寄費(fèi)而劃分的)郵包區(qū) (= parcel post zone)。 7.【自動(dòng)化】(穿孔卡片頂部的)三行區(qū)。 the frigid [temperate, torrid] zone 寒[溫、熱]帶。 a fortified zone 要塞地帶。 the zone of action 作戰(zhàn)區(qū)域。 a school [business, residence] zone 學(xué)校[商業(yè)、住宅]區(qū)。 the zone of influence 勢(shì)力范圍。 soil zone 土層。 in the zone 〔俚語(yǔ)〕處于顛峰狀態(tài)。 loose the maiden zone of 破壞…的處女童貞。 zone out (使)變得昏頭昏腦,(使)變得昏昏沉沉。 vt. 1.用帶圈繞。 2.把…分成地帶。
A new fluid - structure coupling numerical method is developed in the present dissertation . 2d / 3d navier - stokes equations and low renolds number turbulence model are solved in the fluid zone , while the structure models are solved in the solid zone . the boundary conditions are transferred between the two zones after each time step 該方法采用了準(zhǔn)確的數(shù)學(xué)物理模型,在流體區(qū)域求解二維、三維favre平均的非定常navier - stokes方程,在固體區(qū)域?qū)τ诓煌膯?wèn)題求解體振動(dòng)模型,每一個(gè)計(jì)算時(shí)間步完成后,流體和固體之間傳遞一次邊界條件。
In chapter four , according to the analysis on the boundary theory and velocity field of main fluid zone of two - phase fluid pumps , the parameter equations of vane ' s modular curve of centrifugal pump are given , which contact the boundary " layer and eular theory of two - phase fluid pump by the fixing angel of vane as variable and leading into the velocity coefficient a . the results show that , in designing process of vane ' s modular curve of centrifugal pump , the determination of the total shape and parameters relates the flow properties of two - phase fluid and output ability of pump , or the design of the modular curve of centrifugal pump is the kernel of hydraulic design 第四章依據(jù)固液兩相流泵的邊界層理論及對(duì)主流區(qū)速度場(chǎng)的分析,給出了離心泵葉片型線的參數(shù)方程;它是以葉片安裝角為參變數(shù),以引入的速度系數(shù)k _ v作為中間因子,將兩相流泵的邊界層理論和歐拉理論聯(lián)系起來(lái)? ?它說(shuō)明了這樣一個(gè)事實(shí),在離心泵葉片型線的設(shè)計(jì)過(guò)程中,它的整個(gè)形態(tài)或參數(shù)的確定都關(guān)系到兩相流體的流動(dòng)特性和泵的輸出能力,或者說(shuō),離心泵型線的設(shè)計(jì)是其水力設(shè)計(jì)的核心。