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A measurement method of solid particles mean velocity based on the spatial filtering effect of the electrodynamic sensor was developed. 介紹了靜電傳感器的空間濾波特性,推導了顆粒流動(dòng)速度與靜電傳感器輸出信號頻率特性之間的關(guān)系。
In the CGT region,the relation between turbulent Reynolds stress and mean velocity gradient is nonlinear. CGT區域內雷諾應力與平均速度梯度呈非線(xiàn)性關(guān)系。
Mean velocity (Vm) in vertebral arteries(VA) and basilar arteries(BA) were measured using transcranial doppler(TCD). 采用經(jīng)顱多普勒(TCD)腦血流分析技術(shù)測定兩側椎動(dòng)脈(VA)及基底動(dòng)脈(BA)平均血流速度(Vm)。
In the CGT region, the relation between turbulent Reynolds stress and mean velocity gradient is nonlinear. 逆壓梯度時(shí)，湍動(dòng)能負產(chǎn)生率區域不復存在，此時(shí)CGT區域從有到無(wú)，也是呈先增大后縮小的趨勢，并最終消失；
The air velocity of arch crest has little influence on mean velocity of workaround. 拱頂送風(fēng)風(fēng)速對工作區平均風(fēng)速影響不大。
Peak velocity (Vp), mean velocity (Vm), pulsatile index(PI) and resistance index(RI) of malignant tumor are higher than those of benign tumor. 乳腺惡性腫瘤的收縮期最高流速、平均流速、搏動(dòng)指數、阻力指數均高于良性病變。
The peak of the wave celerity probability distribution appears within the mean velocity region of the two-phase bubbly flow. 空隙率波的波速概率分布在兩相混合流速處出現峰值，向兩側加速遞減，與高斯分布接近。
Time-averaged mean velocity (TAMV), pulsatility index (PI), and breath-holding index (BHI) were measured via TCD sonography in the middle cerebral artery. 經(jīng)大腦中動(dòng)脈檢測均時(shí)平均流速、脈動(dòng)指數和屏氣指數。
The distribution of atherosclerotic plaque, degree of stenosis and ultrasounic classification of ECA and the mean velocity of blood flow in MCA were examined. 檢測分析指標為顱外段頸動(dòng)脈粥樣硬化斑塊的分布、狹窄度、超聲分型和顱內大腦中動(dòng)脈的平均血流速度。
A measuring method of the velocity distribution at air calibrator exit of HWFA was introduced.The mean velocity and rate of flow can be obtained by curve fit and integral. 摘要介紹了利用熱線(xiàn)熱膜風(fēng)速計測量其空氣校準器出口的速度分布，經(jīng)過(guò)曲線(xiàn)擬合和積分，可以得出其平均速度和流量。
The mean velocity profiles, the RMS (root-mean-square) velocity profiles and Reynolds stress profiles calculated by the modified model are consistent with the results of DNS. 用修正后的模型計算出的平均速度分布、均方根速度的分布以及雷諾應力的分布，均與直接數值模擬(DNS)的結果吻合較好。
Measures the time mean velocity and velocity fluctuation using a hot film anemometer with different confinement ratio for the axisymmetric turbulent jet in a dead-end tunnel. 介紹了采用熱膜流速儀量測堵頭管中不同受限度軸對稱(chēng)射流的時(shí)均流速和流速脈動(dòng)。
The measurements were carried out in the large-scale wind tunnel at low speed of 9 m/s.Presented data consists of profiles of mean velocity and Reynolds stresses. 實(shí)驗結果表明，氣流流出擴壓葉柵出口后，吸力面和壓力面的通道渦將在較長(cháng)的距離內保持其形態(tài)和強度，但是尾跡的形成及尾跡在壓力的作用下向吸力面方向的偏斜成為了這一階段的主要流動(dòng)現象。
The result shows that the stream power, mean velocity and grain shear stress are effective in predicting sediment transport rate and the unit stream power, Froude number and Velikanov parameter are better indexes for predicting sediment concentration. 結果表明 ,水流功率、平均流速、沙粒切應力能較好地預測輸沙率而單位水流功率、佛汝德數、Velikanov參數則較好地預測輸沙濃度。
Local mean velocity and turbulence intensity measurements were obtained with DANTEC 55 X two-dimensional Laser Dopper Anemometry (LDA) for rod bundle of reactor fuel assembly test model whick was a 4x4 rod bundle. 采用DANTEC 55X兩維激光多普勒測速儀對反應堆燃料組件棒束流場(chǎng)進(jìn)行了測試,獲得了其不同斷面處的紊流速度分布及湍流特性,并進(jìn)行了理論模型計算分析,試驗結果與理論計算及他人實(shí)驗結果符合較好。
The measurements included the internal diameter(D),the maximal velocity in systole(V max ),the minimal velocity in late diastole (Vmin),the mean velocity(),the blood flow volume per minute(Q),the resistance index(RI), the pulsative index(PI) of LRA. 測量?jì)热莅↙RA的內徑（D），收縮期最大血流速度（Vmax）、舒張末期最低血流速度（Vmin）、平均血流速度（V）、每分鐘血流量（Q）、阻力指數（RI）和搏動(dòng)指數（PI）。
Mean velocity profile, turb ulence intensity profile, integral scale and wind spectra are the most fundament al characteristics that describe the atmospheric turbulent boundary layer flow. 平均速度剖面,湍流度剖面，積分尺度和風(fēng)譜是反映大氣湍流邊界層流動(dòng)的四個(gè)最基本的因素。
The variation of centerline velocity, density, turbulent kinetic energy and velocity half-width along the axial line is given.The profiles of mean velocity, mean temperature and turb... 給出了射流中線(xiàn)流速、密度、湍動(dòng)能和速度半寬沿中線(xiàn)的變化,也給出了射流確定后時(shí)均流速、溫度和湍流傳輸量的分布剖面。
Results:There is significant differen ce between both side in patients in urinary peak velocity,mean velocity,jet du ration,interjet interval,accelerative time and no difference in volunteers. 結果:梗阻輸尿管的噴尿峰值速度、平均速度較健側及正常人增大,噴尿間隔時(shí)間延長(cháng),噴尿時(shí)間縮短,噴尿加速時(shí)間縮短。
The peak of the wave celerity probability distribution appears within the mean velocity region of the two-phase bubbly flow, and the distribution approximately fits in with the Gaussian distribution. 空隙波的波速概率分布在兩相混合流速處出現峰值，向兩側加速遞減，與高斯分布接近。