Search Across All Fields. ... Performance and implementation of centrifugal serpentine micromixers with non-rectangular cross-section. Award ID(s): 1659541 NSF-PAR ID: 10130595 Author(s) / Creator(s): Clark, Joshua A; Butt, Tahir A; Mahajan, Gautam; Kothapalli, Chandrasekhar R; Kaufman, Miron; Fodor, Petru S
As the basic tubular receiver unit, the solar receiver tube affects the flow and convective heat transfer of S-CO 2.When fluid flows in a serpentine channel, secondary flow is generated under the action of centrifugal force, which makes the convective heat transfer performance higher than that of the straight tube [5], [6], [7], [8].
The serpentine channel in the centrifugal field facilitates the pre-alignment of microdroplets passing through the sorting orifice. Section S1. Calculation of the droplets' bond number. …
In this paper a centrifugal, serpentine micromixer is simulated and reformed toward better mixing performance. ... Representative numerical results for the modeling of the flow field and ...
Semantic Scholar extracted view of "Newtonian and generalized Newtonian reacting flows in serpentine microchannels: Pressure driven and centrifugal microfluidics" by M. Madadelahi et al. ... Semantic Scholar's Logo. Search 221,633,057 papers from all fields of science. Search. Sign In Create Free Account. DOI: 10.1016/J.JNNFM.2017.11.010;
Three-dimensional steady-state Navier–Stokes equations coupling with convection–diffusion equation are solved on a structured mesh to determine the flow field and …
Flow in curved tubes has been extensively investigated with the main focus on illustrating the effect of the centrifugal force on the flow field development It has been well established that the secondary flow is manifested through a pair of counter rotating vortices having their axes parallel to the main flow. ... The serpentine tubing forces ...
This paper presents an inertial microfluidic device with a simple serpentine micro-channel to continuously separate particles with high performance.
While the radially directed, outwards pointing centrifugal field is independent of the outer contours of the microfluidic chip, a disc shape complies with the rotational symmetry and supports ...
Why do air-handling units require field adjustment during the commissioning phase? to match the blower performance to the system requirements. The components of a commercial fan coil unit include ... The advantage of the backward-curved centrifugal fan over the forward-curved centrifugal fan is that. Backward-curved fans are non-overloading ...
The serpentine channel in the centrifugal field facilitates the pre-alignment of microdroplets passing through the sorting orifice. (a) The phase diagram of non-homogenous phase emulsion flow through a serpentine channel under capillary action in a stationary state. The black dashed line represents the channel's axis, dividing it into upper and
Micromixers generally fall within two categories; active micromixers which use an external force field to enhance mixing such as magnetic fields (Wang et al. [16]) ... La et al. [25] designed and fabricated a centrifugal serpentine micromixer (CSM) on an LOCD and compared it to an original pressure-driven serpentine micromixer (PSM). Mixing in ...
Centrifugal Field + French database ID. 6,271 + French lore. Lorsqu'un Monstre de Fusion est détruit par l'effet d'une carte et envoyé dans le Cimetière, sélectionnez 1 des Monstres-Matériel de Fusion inscrits sur la carte du Monstre de Fusion de votre Cimetière et faites-en l'invocation Spéciale sur votre Terrain. +
Double-Channel Serpentine Flow Field DesignThe performances of two gas-channel designs of bipolar plates were investigated by numerical simulations and experimental incell tests Discover the world ...
An improved technique for particle separation is provided. A serpentine structure is utilized in a continuous fluid flow environment to allow for suitable separation of particles to occur in a manner that does not require external application of forces to initiate the separation. The geometry of the serpentine structure and associated forces generated in connection with fluid flow therein …
The centrifugal buoyancy and gravitational buoyancy have a synergistic and competitive relationship in the serpentine tube. When centrifugal buoyancy and gravitational buoyancy are in a synergistic relationship, which promotes the change of the flow field and makes the convection heat transfer coefficient change rapidly.
In addition to straight channels, there are three basic types of microchannel structures: expansion-shrink array channels, spiral channels and serpentine channels. These structures were created...
The barriers are engineered to induce periodic perturbations in the flow field and enhance the mixing. ... Madadelahi M and Akbari A 2016 Numerical simulation of centrifugal serpentine micromixers and analyzing mixing parameters Chem. Eng. Process. 104 243–52 Filimonov R and Sorvari J 2017 Numerical study on the effect of cross-section ...
The combined effect of gravitational buoyancy, centrifugal force and centrifugal buoyancy on the heat transfer of supercritical CO 2 in a serpentine micro-tube under different flow directions is numerically studied. The comprehensive heat transfer performance in the four flow directions is vertical upward flow (VU), horizontal flow vertical bend (HV), horizontal flow …
The Pentair Hypro 9313 ForceField Centrifugal pump is ideal for use in the most demanding spraying conditions by providing the ultimate protection against today's harshest chemical and application environments such as high volume liquid fertilizer application on large capacity sprayers. The technology protects against dry run failures and prevents costly in-season …
10. A centrifuge is a piece of equipment that puts an object in rotation around a fixed axis (spins it in a circle), applying a potentially strong force perpendicular to the axis of spin (outward). The centrifuge works using the sedimentation principle, where the centripetal acceleration causes denser substances and particles to move outward in the radial direction. …
In this paper, a centrifugal force-based serpentine micromixer (CSM) on a plastic lab-on-a-disk (LOD) for biochemical assay was designed, fabricated, and fully characterized with numerical and experimental methods. The CSM comprised two inlets, an outlet, and a serpentine microchannel composed of five circumferential channels with connecting radial channels in one layer. The …
Inertial particle focusing as a powerful passive method is widely used in diagnostic test devices. It is common to use a curved channel in this approach to achieve particle focusing through balancing of the secondary flow drag force and the inertial lift force. Here, we present a focusing device on a disk based on the interaction of secondary flow drag force, inertial lift …
The Influence of Rotation on the Internal Flow of a Cooled Turbine Blade With Serpentine-Shaped Cooling Channels ASME 1997 Turbo Asia Conference 10.1115/97-aa-115
Particle inertial focusing in a curved channel promises a big potential for lab-on-a-chip applications. This focusing concept is usually based on the balance of inertial lift force and the drag of secondary flow. This paper proposes a new focusing concept independent of inertial lift force, relying solely on secondary flow drag and particle centrifugal force. Firstly, a …
A two-dimensional (2D) serpentine mixer was made of alumina using centrifuge-assisted micromoulding. Concentrated aqueous alumina slurry was filled into microstructured polydimethylsiloxane ...
Centrifugal fan in series with high wind pressure is the key facility of pneumatic transport equipment. To consider the impact of changed conditions on performance of centrifugal fan, internal flow of three-stage centrifugal fan at rated speed in different total pressure conditions is analyzed by CFD software FLUENT6.3 in this paper.
The meaning of CENTRIFUGAL FIELD is a space in which centrifugal forces may be detected (as in a rotating centrifuge or in a vehicle rounding a curve).
Serpentine channels coupling inertial and secondary flows enable effective particle focusing and separation, showing great potential in clinical diagnostics and drug screening.
Numerical simulation of centrifugal serpentine micromixers and analyzing mixing quality parameters," Chem. ... In order for the external field to function, the CTCs must first be labeled with antibody-conjugated nanoparticles; the separation process should be then performed. Before the experimental tests, a numerical study was done to ...
This is especially true in microchannels with a serpentine design, which enhances mixing quality—a critical parameter for cell lysis efficiency. This study presents and compares …
Similar to other serpentine/spiral shaped micromixers, the design exploits the formation of transversal vortices (Dean flows) in pressure-driven systems, associated with the centrifugal forces ...
On the curved sections of the serpentine channel, the interplay between the outward directed centrifugal force and the inward directed transverse pressure field from fluid shear allows for …
The fluid flow changes periodically due to the centrifugal force provided by the serpentine channel, which changes the velocity vector field, the temperature gradient field and the synergy between them. As a result, the field synergy angle in serpentine channel is reduced and the heat transfer is enhanced.
In base sinusoidal serpentine (Fig. 7a), mixing enhances in the transverse direction when the species enter to serpentine microchannel due to the centrifugal forces. These forces are produced due to radial pressure gradients in the flow field because of channel curvatures.
Field Flow Fractionation (FFF) is another macro-scale separation technique which is 30 years old but has attracted recent interest in microfluidics. This technique requires a transverse field which may be polarization, acoustic, magnetic, thermal, optical, or centrifugal, to sort and collect particles by elution.
