turbulent flow in circular tubes
Gas transfer at the air-water interface in a turbulent flow environment pdf
Ngày tải lên :
29/03/2014, 18:20
... Air-Water Interface in a Turbulent Flow Environment Abstract The gas transfer process across the air-water interface in a bottom-shear-induced turbulent environment was investigated to gain improved ... wind shear-induced turbulence (see Section 2.3) The wind shear is indeed the dominant driving mechanism for gas transfer in oceans, rivers and lakes with strong wind speeds (3-8 m/s see MacIntyre ... occurring in windless rivers, in open channel flows, in stirred grids mixing tanks) and buoyant-convective tur- 1.2 Scope and Objective bulence (e.g turbulence in lakes due to surface cooling)...
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Báo cáo hóa học: " Numerical evaluation of laminar heat transfer enhancement in nanofluid flow in coiled square tubes" pdf
Ngày tải lên :
21/06/2014, 03:20
... the base working fluid Since the convective heat transfer inside the tube is directly linked to flow behavior, it is of interest to investigate the flow patterns inside the tubes In our previous ... Engineering, National University of Singapore, Engineering Drive 1, Singapore, 117576 Singapore 2Minerals, Metals and Materials Technology Centre, National University of Singapore, Engineering ... convection in circular tubes Appl Therm Eng 2009, 29:3632-3642 Akbarnia A, Laur R: Investigating the diameter of solid particles effect on a laminar nanofluid flow in a curved tube using two phase...
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An experimental investigation of heat transfer and fluid flow in a rectangular duct with inclined discrete ribs
Ngày tải lên :
05/09/2013, 16:10
... accuracy In a recent study, Cho et al [12] investigated the effect of a gap in the inclined rib on heat transfer in a square duct and reported that a gap in the inclined rib accelerates the flow ... the continuous rib The present investigation was therefore, taken up to determine the optimum width of a gap in the inclined rib to form discrete rib This study will help in determining the gap ... the gap in the inclined rib releases the air partly belonging to the secondary flow and partly belonging to the main flow through the gap As a result of the presence of gap, the secondary flow along...
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Tài liệu controlling flow in PL / SQL pdf
Ngày tải lên :
21/12/2013, 06:17
... calc_val; Controlling Flow in PL/SQL Blocks 23Ć11 23Ć12 Introduction to Oracle: SQL and PL/SQL Using Procedure Builder Building Logical Conditions Build a simple Boolean condition by combining number, ... results in a null value because null values are indeterminate Controlling Flow in PL/SQL Blocks 23Ć13 Class Management Note: PowerPoint: This slide uses a build feature to present the solutions in ... condition determines when the loop is terminated Controlling Flow in PL/SQL Blocks 23Ć25 23Ć26 Introduction to Oracle: SQL and PL/SQL Using Procedure Builder Loop Statements continued Nested Loops...
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Tài liệu Controlling flow in PL / SQL pptx
Ngày tải lên :
17/01/2014, 09:20
... variables involved in the conditions not change during the body of the loop, then the condition will remain TRUE, and the loop will not terminate Controlling Flow in PL/SQL Blocks 23Ć25 23Ć26 Introduction ... calc_val; Controlling Flow in PL/SQL Blocks 23Ć11 23Ć12 Introduction to Oracle: SQL and PL/SQL Using Procedure Builder Building Logical Conditions Build a simple Boolean condition by combining number, ... iterate; Guidelines D Reference the index within the loop only; it is undefined outside the loop D Reference the existing value of an index within an expression D Do not reference the index as the...
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Tài liệu Module 9: Message Flow in Microsoft Exchange 2000 pdf
Ngày tải lên :
24/01/2014, 10:20
... Message Flow in Microsoft Exchange 2000 Determining Link Failure Routing Group B Routing Group B Topic Objective To describe the factors causing DOWN link state connector status Lead -in Link State ... ! In this module, … Working With Failed Links ! Lead -in Message Flow Architecture Message Tracking Several components in Exchange 2000 work with components in Windows 2000 to provide message flow ... function when sending and receiving messages Within Exchange, message flow involves routing, queuing, categorizing, and communication between protocols and the Information Store Information Store...
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Báo cáo " Impacts of climate change on the flow in Hong-Thai Binh and Dong Nai river basins " docx
Ngày tải lên :
22/03/2014, 12:20
... that: in the three scenarios, the average flow has an increasing tendency in Hong-Thai Binh river basin and a decreasing one in Dong Nai river basin For seasonal flow, in Hong-Thai Binh river basin, ... 3.2 Flood season flow According to three climate change scenarios, there are increasing trends of flood season flow in Hong-Thai Binh basin In general, the increase in flood flow in the A2 scenario ... the increase in flow in the scenarios The increase in flood flow in scenario B1 is the highest In the period 2080 - 2099: Flood flow discharge increases quite markedly compared with the baseline...
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Báo cáo " Impacts of climate change on the flow in Hong-Thai Binh and Dong Nai river basins " doc
Ngày tải lên :
28/03/2014, 15:20
... that: in the three scenarios, the average flow has an increasing tendency in Hong-Thai Binh river basin and a decreasing one in Dong Nai river basin For seasonal flow, in Hong-Thai Binh river basin, ... 3.2 Flood season flow According to three climate change scenarios, there are increasing trends of flood season flow in Hong-Thai Binh basin In general, the increase in flood flow in the A2 scenario ... the increase in flow in the scenarios The increase in flood flow in scenario B1 is the highest In the period 2080 - 2099: Flood flow discharge increases quite markedly compared with the baseline...
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Đề tài " Global existence and convergence for a higher order flow in conformal geometry" pptx
Ngày tải lên :
28/03/2014, 22:20
... − C Since Ef [w] is bounded from above, we conclude that n (−∆0 ) w M dV0 ≤ C; hence w−w n H2 ≤ C Using an inequality of N Trudinger, we obtain M eα(w−w) dV0 ≤ C for all real numbers α In particular, ... flow in Riemann surfaces revisited: a new point of view, Internat Math Res Notices (2001), no 6, 275–297 GLOBAL EXISTENCE 343 [7] X Chen and G Tian, Ricci flow on K¨hler-Einstein surfaces, Invent ... Therefore, the function w satisfies a quasilinear parabolic equation of order n involving the critical Sobolev exponent Moreover, the reaction term is nonlocal, since f involves values of w on the whole...
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chhabra & richardson (1999) non newtonian flow in the process industries fundamental and engineering applications
Ngày tải lên :
04/06/2014, 13:18
... –104 Spreading and coating Rubbing 104 –105 Milling pigments in fluid bases High speed coating Lubrication 103 –105 105 –106 103 –107 Paints, printing inks Application Painting and coating, Toilet ... “strain-hardening” Many materials including polymer melts and solutions thus exhibit shearthinning in simple shear and strain-hardening in uniaxial extension Except in the limit of vanishingly ... 49 Flow in pipes and in conduits of non circular cross- sections 3.1 Introduction 3.2 Laminar flow in circular tubes 74 3.2.1 Power-law fluids Example 3.1 3.2.2 Bingham...
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báo cáo hóa học: " Modulation of walking speed by changing optic flow in persons with stroke" ppt
Ngày tải lên :
19/06/2014, 10:20
... non-volitional changes in walking speed in response to an OF of continually changing speed (Experiment 1) were examined In the second, the voluntary or intentional changes in walking speed in response to ... observed in subjects with Parkinson's disease, which manifests as an abnormally large modulation in walking speed in response to changing OF speed [10] This finding in Parkinson's disease was interpreted ... walking in response to changing OF speeds The main findings are that subjects with stroke present with alterations in their Figure senting with a slow (B) and fast (C) walking speed speed in a...
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báo cáo hóa học:" Luteal blood flow in patients undergoing GnRH agonist long protocol" pot
Ngày tải lên :
20/06/2014, 07:20
... showed vitamin E has an ability to improve luteal blood flow impedance, in agreement with previous studies that showed vitamin E increases blood flow in a variety of organs including corpora ... control in this study because it does not affect luteal blood flow Vitamin E was used to increase luteal blood flow CL-RI was examined during the mid-luteal phase (6-8 days after ovulation) In case ... between maximal systolic blood flow (S) and minimal diastolic flow (D) divided by the peak systolic flow (S-D/S) Blood flow impedances were examined in the corpus luteum during the mid-luteal phase...
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Báo cáo hóa học: " A case study of GM maize gene flow in South Africa" potx
Ngày tải lên :
21/06/2014, 05:20
... pollen-mediated gene flow (which involves determining the extent of cross-pollination over distance and computer modelling) [27-38] While several studies have determined the extent of cross-pollination at ... plantings in the area Weather data (wind speed, wind direction, temperature and relative humidity) were captured (5 days during flowering) using a mobile weather station (Vantage Pro, Davis Instruments ... conducive to maintaining maximum pollen viability Furthermore, all three sites are characterized by swirling winds, and with an influence of primarily northerly winds may partially explain the bias...
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Báo cáo hóa học: " Atomistic Origin of Rate-Dependent Serrated Plastic Flow in Metallic Glasses" pot
Ngày tải lên :
22/06/2014, 01:20
... atomic clusters The figure indicates that the degree of atomic rearrangement underlying flow in an individual loading step varies with strain rate or loading timescale This kind of discrete flow event ... deformation indicated by (X Y-1) [rn(t - Dt)r0(t - Dt)] during the time interval [t - Dt, t] [29] We calculated Dmin values of all atoms during each displace˚ ment interval (0.1 A) to get information ... basin induced by loading is schematically shown in Fig 4b When transiting from one energy basin to another, the 123 528 Fig (a) The potential energy versus displacement curves at different strain...
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static behaviour of natural gas andits flow in pipes
Ngày tải lên :
27/07/2014, 23:44
... condition in the gas injection well The above equations are in oil field units in which d is expressed in inches, L in feet, in centipoises, T in degrees rankine and pressure in pounds per square inches ... field units in which L is in feet, R = 1545, temperature(T) is in o R , g = 32.2 ft/sec2, diameter (d) is in inches, pressure (p) is in pound per square inche (psia), flow rate (Q b) is in MMSCF ... field units in which L is in feet, R = 1545, temperature is in oR, g = 32.2 ft/sec2, diameter (d) is in inches, pressure (p) is in pound per square inch (psia), flow rate (Qb) is in MMSCF / Day,...
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steady state compressible fluid flow in porous media
Ngày tải lên :
27/07/2014, 23:44
... following problem came from the book of (Amyx et al., 1960) During a routine permeability test, the following data were obtained www.intechopen.com Steady State Compressible Fluid Flow in Porous ... with increasing length of porous media The compressibility of a fluid (C f) is defined as: www.intechopen.com Steady State Compressible Fluid Flow in Porous Media C f 473 d dp (13) Combination ... atm According to (Amyx et al., 1960), this is “the generalized form of Darcy law as presented in APT code 27 “ Horizontal and Uphill Gas Flow in Porous Media In uphill flow, the + sign in the numerator...
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Báo cáo lâm nghiệp: "Infra-red images of heat field around a linear heater and sap flow in stems of lime trees under natural and experimental conditions" doc
Ngày tải lên :
08/08/2014, 01:22
... panels in Fig 9B - no flow occurred any more in the right stem side after its cutting), flow slightly increased there using the remaining part of water source (roots) towards the same sink (remaining ... Temperature gradients around a linear heater in stems due to mowing sap, in: Cermak J., Nadezhdina N (Eds.), Measuring Sap Flow in Intact Plants, Proc of 4th Int Workshop, Zidlochovice, Czech ... explained as a consequence of redistribution of tensile forces The followed increases of flow could be explained by a decreasing of conducting pathways from side of cutting, drained by the same sink...
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Báo cáo khoa học: "Reproduction and gene flow in the genus Quercus" ppt
Ngày tải lên :
08/08/2014, 19:21
... same year Staminate inflorescences are initiated in late spring, flowers develop in early summer and meiosis occurs in the following spring, giving rise to binucleate pollen grains immediately ... (ie gene flow) could induce the decline of a species and may explain the situation of several endangered oak species (Q inckleyi, Q tardifolia) On the contrary, maintaining gene flow mainly improves ... WM (1958) Evaluating mast yields in the oaks Pa Agric Exp Stn Bull 635, 22 pp Sharp WM, Chisman HH (1961) Flowering and fruiting in the white oaks I Staminate flower- Sharp ing through pollen...
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báo cáo khoa học: "Reverse end-diastolic flow in a fetus with a rare liver malformation: a case report" pps
Ngày tải lên :
11/08/2014, 03:20
... pathological events can explain reverse flow in the MCA [6,7] Reverse flow could also represent the extreme form of a brain-sparing mechanism before fetal death in case of intra-uterine growth restriction ... reversal of diastolic flow in the MCA The peculiarity in this case was that in our patient, reverse flow in the MCA persisted for over one week and was not associated with reverse flow in the UA However, ... http://www.jmedicalcasereports.com/content/5/1/37 Figure Sonogram showing reverse flow in the MCA investigate in particular the brain edema, and this confirmed the presence of fetal ascites without showing any abnormality of fetal cerebral...
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