Two dimensional numerical computation of a circulating fluidized bed biomass gasifier

Parametric analysis of a circulating fluidized bed biomass gasifier for hydrogen production

Parametric analysis of a circulating fluidized bed biomass gasifier for hydrogen production
... study was validated against the experimental data of Keawpanha et al [29] using Japan cedar as a biomass The gasifier was operated at the temperature of 700  C, S/B of one and steam temperature of ... the bed material, which can be either sand or char; in addition, these apparatuses recirculate nearly all of the bed material and char with a cyclone separator A schematic diagram of a CFB biomass ... Chutichai B, Authayanun S, Assabumrungrat S, Arpornwichanop A Performance analysis of an integrated biomass gasification and PEMFC (proton exchange membrane fuel cell) system: hydrogen and power...
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A comprehensive two dimensional Computational Fluid Dynamics model for an updraft biomass gasifier

A comprehensive two dimensional Computational Fluid Dynamics model for an updraft biomass gasifier
... turbulence model for packed bed gas phase and free board, a radiation model for solid phase, a bed shrinkage model, and interphase heat transfer model In this study, the ultimate mathematical model for ... shrinking biomass particle, Chem Eng Sci 59 (10) (May 2004) 1999e2012 [26] N Fernando, M Amin, M Narayana, T Jayawickrama, S Jayasena, A mathematical model for pyrolysis of biomass, in: Moratuwa Eng ... [14] Y Wu, Q Zhang, W Yang, W Blasiak, Two- dimensional computational fluid dynamics simulation of biomass gasification in a downdraft fixed-bed gasifier with highly preheated air and steam, Energy Fuels...
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Estimation of gas composition and char conversion in a fluidized bed biomass gasifier

Estimation of gas composition and char conversion in a fluidized bed biomass gasifier
... mass of carbon in a char particle, kg mass of carbon in the reactor, kg mass of char (carbon and fuel ash) in the reactor, kg critical value of mass of char in the reactor, kg mass of total inventory ... mass fraction of carbon in the char of the reactor, kg/kg mass fraction of carbon in the char after devolatilization, kg/kg mass fraction of carbon in the char of bottom ash discharge (stream ... from an analysis, while the heating value of char and tar are estimated from Ref [34] 2.2.4 Kinetic models for secondary conversion of gas Methane and tar conversions are calculated assuming perfect...
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Báo cáo toán học: "A two-dimensional pictorial presentation of Berele’s insertion algorithm for symplectic tableaux" doc

Báo cáo toán học:
... Local Rules Picture of w Next we explain our pictorial approach, which is a two-dimensional presentation of Berele’s algorithm based on a modified set of local rules in the spirit of Fomin We draw ... (i − 1, j ), the same holds for the vertices (i, j ) 3.3 Structure of proof of Theorem 3.4 The rest of this section is devoted to the proof of Theorem 3.4 The proof proceeds by induction based ... serve as the inverse of the column insertion instead of the row insertion It is also a semistandard version of a bijective tool used by Sundaram [Sun1, Proof of Lemma 8.7] Proof We prove Lemma 3.6...
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Báo cáo y học: "Two-dimensional power Doppler-three-dimensional ultrasound imaging of a cesarean section dehiscence with utero-peritoneal fistula: a case report" pdf

Báo cáo y học:
... after dissection (arrow) As non-invasive alternative procedures, magnetic resonance imaging with heavily T2-weighted images may show a bright fluid-filled tract, and computed tomography can also ... Doppler hysterosonography have been used successfully in many cases to allow direct visualization of the uterine fistulae It has been demonstrated that the normal sonographic appearance of the ... detecting cesarean hysterotomy scars The cesarean scar defect, defined by the presence of fluid within the incision site, is more common when labor precedes cesarean delivery and with multiple cesarean...
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Spin density functionals of a two dimensional fermionic gas of dipolar atoms thomas fermi dirac treatment

Spin density functionals of a two dimensional fermionic gas of dipolar atoms  thomas fermi dirac treatment
... ground-state energies of a two- dimensional gas of neutral atoms with magnetic-dipole interaction, in the ThomasFermi -Dirac approximation For many atoms in a harmonic trap, we discuss the numerical ... spin- density functionals of a 2D fermionic gas of dipolar atoms under the scheme of TFD approximation For a system with many atoms, we give analytic solution for the single-particle spatial density ... ground-state energy of a 2D, spin- polarized (SP) gas of neutral fermionic atoms with magnetic-dipole interaction, in the Thomas- FermiDirac (TFD) approximation This formalism is then generalized to a...
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TRANSPORT PROPERTIES OF a QUASI TWO DIMENSIONAL ELECTRON GAS IN a sisige HETEROSTRUCTURE TEMPERATURE AND MAGNETIC FIELD EFFECTS

TRANSPORT PROPERTIES OF a QUASI TWO DIMENSIONAL ELECTRON GAS IN a sisige HETEROSTRUCTURE TEMPERATURE AND MAGNETIC FIELD EFFECTS
... field leading to reduced screening in a spin-polarized electron gas We have also obtained similar results for RIS with zi = 490˚ A and Nid = 3.2 × 1013 cm−2 and IRS with Λ = 100˚ A, ˚ ∆ = 3. 5A IV ... values of zi and Nid = 3.2 × 1013 cm−2 and interface impurity scattering (IIS) with zi = and Ni0 = × 109 cm−2 The results shown in Fig indicate that the mobility increases and the critical electron ... electron density NM IT decreases with increase in the distance of the impurity layer from the Si/SiGe interface TRANSPORT PROPERTIES OF A Q2D ELECTRON GAS IN A Si/SiGe HETEROSTRUCTURE 89 zi /V...
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Báo cáo hóa học: " Any two-dimensional Normed space is a generalized Day-James space" pot

Báo cáo hóa học:
... Cite this article as: Alonso: Any two-dimensional Normed space is a generalized Day-James space Journal of Inequalities and Applications 2011 2011:2 Submit your manuscript to a journal and benefit ... with the above norm is called an ℓψ-ℓ space The purpose of this paper is to show that any two-dimensional normed space is isometrically isomorphic to an ℓψ-ℓ space To this end we shall use the ... S0002-9947-1947-0022686-9 del Río, M: Ortogonalidad en Espacios Normados y Caracterización de Espacios Prehilbertianos Dpto de Análisis Matemático, Univ de Santiago de Compostela, Spain, Serie B 14 (1975) doi:10.1186/1029-242X-2011-2...
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Báo cáo khoa học: "Two-dimensional gel electrophoresis of membrane proteins from ectomycorrhizal fungi" doc

Báo cáo khoa học:
... Comgels of membrane proteins to 2-D solubilized by other methods, protein gels solubilized by the latter method exhibited a larger number of polypeptides Similarly, gels of membrane proteins from ... that the membrane fraction was enriched in plasma membrane SDS-PAGE patterns of total proteins, proteins from the cytosolic fraction, and proteins solubilized from purified microsomal membranes ... for solubilisation of membrane proteins for 2-D PAGE analysis Solubilisation of membrane proteins for 2-D PAGE is difficult because most membrane proteins are tightly bound to membrane lipids,...
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báo cáo khoa học: "Interest in quantitative genetics of Dutt’s and Deak’s methods for numerical computation of multivariate normal probability integrals" potx

báo cáo khoa học:
... These integrals have integration limits (— 00, + 00) indepen, URLAND dent of the initial truncation points and therefore can be evaluated using precise numerical integration methods The integration ... variable index a index (j expansion = (i 1, index 1, = c with of convergent series involving a n) c = n (positive integer (n - 1)/2) from to + 00) varying independently for index a, = k j for all ... unobservable continuous variable directly Within this general framework, knowledge of the value of normal probability if often required and consequently the scope of corresponding numerical methods is...
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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
... 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...
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Numerical analysis of a brushless permanent magnet DC motor using coupled systems

Numerical analysis of a brushless permanent magnet DC motor using coupled systems
... to characterize the material Another type of material that is characterized by a broad hysteresis loop is called hard magnetic material 1.3.1 Hard magnetic materials (Permanent magnets) Permanent ... commutator motor: The construction of a permanent magnet DC motor( PMDC) is similar to a DC conventional motor with the electromagnetic excitation system replaced by permanent magnets A PMDC commutator ... have made using BLDC motor a viable alternative The developments and applications of the BLDC motors have been greatly accelerated by improvements in permanent magnet materials, especially rare-earth...
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Numerical computation of the fluid flow and heat transfer between the annuli of concentric and eccentric horizontal cylinders

Numerical computation of the fluid flow and heat transfer between the annuli of concentric and eccentric horizontal cylinders
... Introduction 2) The numerical model is then extended for the study of the effects of rotation of the outer cylinder on the flow and the heat transfer in concentric and eccentric annuli Furthermore, ... effects of various system parameters such as the geometry of the annulus, the properties of the fluid and the rotation rate of the outer cylinder on the flow and the heat transfer in the annular ... three types, and characteristics of flow patterns and heat transfer are elucidated For the flows in horizontal eccentric annulus, the flow and the heat transfer are strongly influenced by the orientation...
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