A numerical study of a permeable capsule under stokes flows by the immersed interface method

... A NUMERICAL STUDY OF A PERMEABLE CAPSULE UNDER STOKES FLOWS BY THE IMMERSED INTERFACE METHOD PAHALA GEDARA JAYATHILAKE (B Sc., University of Moratuwa, Sri Lanka) A THESIS SUBMITTED FOR THE ... physical parameters, extend the IIM approach to study the adhesion and detachment of a permeable capsule adhered onto a rigid planar substrate in the absence of an imposed flow field, apply the ... rolling of deformable capsules on a compliant surface and showed that compliant surface has an influence on capsule- capsule interaction over the substrate The interaction of a malaria infected...

Báo cáo "Numerical study of long wave runup on a conical island " pdf

... there was a conical island setup in a wave basin having the dimension of 30 m wide and 25 m long. The conical island has the shape of a truncated cone with diameters of 7.2 m at ... practical problems related to long waves, such as inundation of tsunami on coastal areas. Simulated results in this study also confirm that the area behind an island can be attacked ... the model developed in this study has potential features to apply to the study of practical problems related with long waves, such as inundation of tsunami on coastal areas. Fig. 4. Snapshots of the water surface displacement due to the solitary wave. ...

A numerical study of airflow through human upper airways

... distortion of anterior nasal airway was found to have much larger impact on nasal airflow patterns than middle and posterior nasal airway (Garcia et al., 2010) Deviated nose, referring to appearance of ... sectional area around sinus ostia at peak inspiration and peak expiration 120 Figure 6.1 (a) Sagittal image of human upper airway The fluid domain consists of the nasal cavity, the nasopharynx ... at nasal valve and turbinate end and nasal resistance in left and right airways 82 Table 4.4 Minimum cross sectional areas (MCAs) of left and right airways around the nasal valve...

A numerical study of porous fluid coupled flow systems with mass transfer

... investigate mass transfer in a reactor partially filled with porous media There is also no systematic or parametrical study on a microchannel reactor with a porous wall that examines the influence of ... interface conditions, usually continuities of temperature and heat flux are required (Neale and Nader, 1974; Vafai and Thiyagaraja, 1987; OchoaTapia and Whitaker, 1997; Jang and Chen, 1992; Kim and ... The study of flow systems, which consists of porous media and homogenous fluids, is relevant to a wide range of industrial and environmental applications Examples of practical applications are...

A numerical study of h2 o2 detonation waves and their interaction with diverging converging chambers

... thus, any rarefaction waves arising behind the wave front will overtake and weaken the detonation wave As a matter of fact, a strong detonation, also called overdriven detonation, is not stable and ... For a steady, planar, one-dimensional detonation wave, with both the reactants and products modeled as the same perfect gas and the detonation wave modeled as a discontinuity at which heat addition ... Introduction products and generates a train of weak compression waves that propagate into the reactants ahead of the flame and finally merge into a shock wave; 3) onset of “an explosion in an explosion”...

A numerical study of fluid flow and mass transport in a microchannel bioreactor

... theoretical information on mass transport A systematic study is needed to investigate the effects of various important parameters on the fluid flow and mass transport in microchannel bioreactors ... increasing fluid- phase endocytosis; and they are capable of producing intracellular actin and myosin filaments that are oriented in the flow direction Eskin et al (1984) investigated the shear ... governing equations and the numerical methods for the present simulations In Chapter 3, the numerical analysis of fluid flow and mass transfer in a threedimensional flat-plate microchannel bioreactor...

A numerical study of heat and mass transfer in porous fluid coupled domains

... Ochoa-Tapia and Whitaker’s stress jump conditions for the flow, heat and mass transfer in porous/ fluid coupled domains, and to investigate their effects on local and global heat and mass transfer; ... incorporated with heat or mass transfer There are also limited numerical experiments and systematic results for heat and mass transfer in porous/ fluid coupled domains for certain numerical applications ... Interface Conditions For heat transfer interface conditions, usually continuities of temperature and heat flux are required (Neale and Nader, 1974; Vafai and Thiyagaraja, 1987; OchoaTapia and Whitaker,...

A numerical study of wave interaction with porous media

... field of coastal engineering, wave interaction with porous media is an important phenomenon and its applications include wave interaction with porous seabeds and wave interaction with porous structures ... A NUMERICAL STUDY OF WAVE INTERACTION WITH POROUS MEDIA S A SUVINI ANUJA KARUNARATHNA (B.Sc.Eng (Hons.), University of Peradeniya, Sri Lanka) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF ... damping over non-rigid porous seabeds 39 Interaction of periodic waves with porous breakwaters 41 2.5.2 Chapter 41 2.5.1 2.6 Wave interaction with porous breakwaters Interaction of solitary waves...

A NUMERICAL STUDY OF SWIRLING FLOW AND OXYGEN TRANSPORT IN a MICRO BIOREACTOR

... was to investigate the swirling flow and oxygen transport in a stirred micro- bioreactor A numerical model was developed to investigate the flow field and mass transport in a micro- bioreactor in ... Swirling Flow and Mass Transfer in a Micro- Bioreactor with Partially Rotating End-Wall 79 5.1 Numerical Model 80 5.2 Vortex Breakdown in a Micro- Bioreactor with Partially Rotating End-Wall 83 ... Hydrodynamic Stress in Stirred Bioreactors 1.2.3 Mass Transport in Stirred Bioreactors 1.2.4 Swirling Flow and Vortex Breakdown in Micro- Bioreactors 12 1.2.5 Flow and Mass Transport in Bioreactors...

A numerical study of elastica using constrained optimization methods

... and spatial elastica Planar elastica comprise three mostly encountered cases: pin-pin elastica, clamp-pin elastica, and clamp-clamp elastica When both ends of elastica are clamped, and the system ... Diagram of D − λ1 / Pcr (spatial clamp-clamp elastica) ………… … 82 Figure 4.38 Diagram of D − λ3 / Pcr (spatial clamp-clamp elastica) …………….…82 Figure 4.39 Diagram of D − Strain energy (spatial clamp-clamp ... Superimposition of all configurations of clamp-pin elastica ……….69 Figure 4.24 Geometry of planar clamp-clamp elastica. ……………………… … 70 Figure 4.25 Diagram of D − P / Pcr (clamp-clamp elastica) ……………………….70...

A numerical study of wave propagation in poroelastic media by use of the localized differential quadrature (LDQ) method

... simulate wave propagation in a poroelastic medium First, the theory of propagation of elastic waves in fluid-saturated poroelastic media and the localized differential quadrature (LDQ) method are ... and the localized differential quadrature method 2.1 General The theory of propagation of elastic waves in fluid-saturated poroelastic media was originally established by Biot (195 6a) in a system ... compare the wave scattering characteristics 1.4 Outline of the thesis Chapter presents the theory of propagation of elastic waves in fluid-saturated porous media and the proposed localized differential...

Numerical study of a large diameter shaft in old alluvium

... degree of saturation Ssat Saturated degree of saturation Sres Residual saturation T Temperature TA Transmissivity of aquifer t Thickness of shaft lining V Maximum shear at final excavated depth in ... environments of deposits of Old Alluvium in Singapore appeared to correlate well with the Alluvial Complex in Singkep and Bangka of Indonesia The maximum recorded depth of the Old Alluvium in Singapore ... NUMERICAL STUDY OF A LARGE DIAMETER SHAFT IN OLD ALLUVIUM TAN RWE YUN (B Eng (Hons.), NUS) A THESIS SUBMITTED FOR THE DEGREE OF MASTER OF ENGINEERING DEPARTMENT OF CIVIL ENGINEERING NATIONAL...

Numerical study of the heat transfer in a miniature joule thomson cooler

... predict the characteristics of the cryogen, argon along the helical coil capillary tube on a miniature J-T cryocooler; ii To validate the simulation results against the experimental data obtained ... Variation of Argon Specific Heat against Temperature 63 Figure 4.3 Variation of Argon Entropy against Temperature 64 Figure 4.4 Variation of Argon Enthalpy against Temperature 64 Figure 4.5 Variation ... Advantages & Disadvantages of Store Expendable cryogen Advantages Disadvantages Reliable and absolute guaranteed Inevitable loss of the cryogen due to cooling for a predictable period heat leaks...

Báo cáo khoa học: Gene expression silencing with ‘speciﬁc’ small interfering RNA goes beyond speciﬁcity – a study of key parameters to take into account in the onset of small interfering RNA off-target effects potx

... thereafter Thus, according to our data, the undesired effects of siRNA seem to appear in a transient way Another key parameter to take into account could be the length of the transfection period Although ... locations of the array allowed quantiﬁcation of the local background and evaluation of the array homogeneity, which is taken into account in the normalization Furthermore, in order to consider the ... upregulation of several mRNAs, although the underlying mechanisms are unclear siRNAs can activate dsRNA-dependent protein kinase and TLR3 pathways, leading to the activation of transcription factors...

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