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22 results for “Transitional flow”
Database: Influence of large-scale freestream turbulence on bypass transition in air and organic vapour flows
<p>This is an open-access database of numerical simulations of freestream-turbulence induced transitions of zero-pressure-gradient flat plates boundary layers. The data have been collected at Arts et Metiers Institute of Technology, at DynFluid laboratory, in the period 2021-2024 within the REGAL-ORC project- REal GAs effects on Loss mechanisms of ORC turbine flows, a project in collaboration with FH Münster in Germany.</p> <p>Work related to the database is published in Journal of Fluid Mechanics, under the title: "Influence of large-scale freestream turbulence on bypass transition in air and organic vapour flows". The aims of this work was to investigate freestream-turbulence induced transitions, in particular under relatively large integral length scale, of air and organic vapors boundary layers.</p> <p>This version contains evolutions of averaged quantities in the streamwise direction, along with profiles and spectra in the boundary layer for all the different simulations performed. This database is supplemented with python codes to read the data and descriptions of the data in the headers and README files.</p>
Text-fig. 1. A. Location of the sites of Capo di Fiume, Palena and Pollenzo near Alba. B. Capo di Fiume stratigraphic section. Facies of coastal-transitional marine associations – a. Freshwater marsh and tidal creeks interval, b. Swamp interval, c1–c4. Facies of eustarine bay associations, d1–d6. Facies of open shelf marine associations. Symbols: "black star" – fossiliferous horizon with plant material studied here, 1. mottled grey to dark-brown marls and clayey marls, 2. fissile dark-grey marls and shaly marls, 3. limestones, 4. marly limestones and limey marls, 5. bio-lithoclastic calcarenites, 6. lime conglomerate, 7. massive muddy deposit produced by mass-flow mechanism, 8. diatomitic marls, 9. "terra rossa" soil (modified after Carnevale et al. 2011). in Feather Palm Foliage From The Messinian Of Italy (Capo Di Fiume, Palena And Pollenzo Near Alba) Within The Framework Of Northern Mediterranean Late Miocene Flora
Text-fig. 1. A. Location of the sites of Capo di Fiume, Palena and Pollenzo near Alba. B. Capo di Fiume stratigraphic section. Facies of coastal-transitional marine associations – a. Freshwater marsh and tidal creeks interval, b. Swamp interval, c1–c4. Facies of eustarine bay associations, d1–d6. Facies of open shelf marine associations. Symbols: "black star" – fossiliferous horizon with plant material studied here, 1. mottled grey to dark-brown marls and clayey marls, 2. fissile dark-grey marls and shaly marls, 3. limestones, 4. marly limestones and limey marls, 5. bio-lithoclastic calcarenites, 6. lime conglomerate, 7. massive muddy deposit produced by mass-flow mechanism, 8. diatomitic marls, 9. "terra rossa" soil (modified after Carnevale et al. 2011).
Selected data from "Small-scale universality in the spectral structure of transitional pipe flows"
<p>Data from Figure 4 and Figure 6 of "Small-scale universality in the spectral structure of transitional pipe flows", Science Advances (2019). Included are spatial spectra normalized with the Kolmogorov scale and viscosity. The collapse of the normalized spectra is indicative of the small-scale universality predicted by Kolmogorov. The data are taken from turbulent and transitional pipe flows at different Re and different positions from the wall from both experiments and simulations (experiments are at the centerline only).</p>
Supplementary videos for "The mechanical origin of snow avalanche dynamics and flow regime transitions"
<p>We are releasing the videos as the supplementary information for our submitted manuscript to The Cryosphere. </p> <p>Movie 1. Velocity of the flows in the four typical flow regimes in Fig. 2(a). Frame rate is 24 FPS.</p> <p>Movie 2. Volumetric plastic strain of the flows in the four typical flow regimes in Fig. 2(a). Frame rate is 24 FPS.</p> <p>Movie 3. Velocity of the flow in transition from cold dense to warm shear regimes in Fig. 2(b). Frame rate is 24 FPS.</p> <p>Movie 4. Volumetric plastic strain of the flow in transition from cold dense to warm shear regimes in Fig. 2(b). Frame rate is 24 FPS.</p>
Data from: Geographic population structure of the African malaria vector Anopheles gambiae suggests a role for the forest-savannah biome transition as a barrier to gene flow
The primary Afrotropical malaria mosquito vector Anopheles gambiae sensu stricto has a complex population structure. In western Africa, this species is split into two molecular forms and displays local and regional variation in chromosomal arrangements and behaviours. To investigate patterns of macro-geographic population substructure, 25 An. gambiae samples from 12 African countries were genotyped at 13 microsatellite loci. This analysis detected the presence of additional population structuring, with the M-form being subdivided into distinct west, central and southern African genetic clusters. These clusters are coincident with the central African rainforest belt and northern and southern savannah biomes, which suggests restrictions to gene flow associated with the transition between these biomes. By contrast geographically patterned population substructure appears much weaker within the S-form.
Supplementary material for the manuscript "Transition to chaos and modal structure of magnetized Taylor–Couette flow"
<p>These data and codes are the supplementary materials for the manuscript "Transition to chaos and modal structure of magnetized Taylor–Couette flow". The description of the data is in the file "DATA_OVERVIEW.txt".</p>
Flow-to-fracture transition of linear Maxwell-type vs. yield strength fluids by air injection – implications for magma fracturing
<p>Datasets for Sánchez et al., Flow-to-fracture transition of linear Maxwell-type vs. yield strength fluids by air injection – implications for magma fracturing, accepted on Dec 16, 2022, in Geophysical Research Letters.</p>
Supplementary Materials for "Temperature field, flow field and temporal fluctuations thereof 2 in ammonothermal growth of bulk GaN – transition from dis-3 solution stage to growth stage conditions"
<p>Video S1: dissolution stage (upper part of nutrient and above), Video S2: 630 dissolution stage (baffle region), Video S3: dissolution stage (top seed), Video S4: dissolution stage 631 (middle seed), Video S5: dissolution stage (bottom seed), Video S6: growth stage (upper part of 632 nutrient and above), Video S7: growth stage (baffle region), Video S8: growth stage (top seed), Video 633 S9: growth stage (middle seed), Video S10: growth stage (bottom seed).</p>
Data from: Geographic population structure of the African malaria vector Anopheles gambiae suggests a role for the forest-savannah biome transition as a barrier to gene flow
Open the record for dataset details and reuse information.
Data from: Integrating continuous stocks and flows into state-and-transition simulation models of landscape change
Open the record for dataset details and reuse information.
Data from: Speciation with gene flow and the genetics of habitat transitions
Whether speciation can advance to completion in the face of initially high levels of gene flow is a very controversial topic in evolutionary biology. Extensive gene exchange is generally considered to homogenize populations and counteract divergence. Moreover, the role of introgressive hybridization in evolution remains largely unexplored in animals, particularly in freshwater zooplankton in which allopatric speciation is considered to be the norm. Our work investigates the genetic structure of two young ecological species: the pond species, Daphnia pulex and the lake species, Daphnia pulicaria. Phylogenetic and population genetics analyses were conducted on mitochondrial NADH dehydrogenase 5 (ND5) gene, the nuclear Lactate dehydrogenase (Ldh) gene, and 21 nuclear microsatellite markers in 416 individuals from habitats with various degrees of permanence. The strong and consistent phylogenetic discordance between nuclear and mitochondrial markers suggests a complex evolutionary history of multiple independent habitat transition events that involved hybridization and introgression between lake and pond Daphnia. On the other hand, the low level of contemporary gene flow between adjacent populations indicates the presence of effective habitat isolating barriers. The Daphnia system provides strong evidence for a divergence-with-gene flow speciation model that involves multiple habitat transition events.
Comparison of Bidirectional Palpation Test and Transit Time Flow Measurement for LIMA-LAD Graft Patency
ClinicalTrials.gov study NCT06934993. IPD Sharing: YES. Countries: 1. Publications: 0.
Data from: Speciation with gene flow and the genetics of habitat transitions
Open the record for dataset details and reuse information.
Data from: Transitions in the flow patterns and aerodynamic characteristics of the flow around staggered rows of cylinders
A two-dimensional numerical study of flow across rows of identical square cylinders arranged in staggered fashion is carried out. This study will unreveal complex flow physics depending upon the Reynolds number (Re) and gap spacing (g) between the cylinders. The combined effect of Reynolds number and gap spacing on the flow physics around staggered rows of cylinders are numerically studied for 20 ≤ Re ≤ 140 and 1 ≤ g ≤ 6. We use the lattice Boltzmann method for numerical computations. It is found that with increase in gap spacing between the cylinders the critical Reynolds number for the onset of vortex shedding also increases. We observed a strong effect of Reynolds number at g = 2 and 4. Secondary cylinder interaction frequency disappears for large Reynolds number at g = 6 and 5 and the flow around cylinders are fully dominated by the primary vortex shedding frequency. This ensures that at large gap spacing with an increase in the Reynolds number the wakes interaction between and behind the cylinders is weaken. Furthermore, it also ensures that the wake interaction behind the cylinders is strongly influenced by the jets in the gap spacing between the cylinders. We also found that g = 2 is the critical gap spacing for flow across rows of staggered square cylinders for the considered range of Reynolds number. Depending on the Reynolds number we observed; synchronous, quasi-periodic-I, quasi-periodic-II, and chaotic flow patterns. In synchronous flow pattern, an in-phase and anti-phase characteristics of consecutive cylinders has been observed. The important physical parameters are also analyzed and discussed in detail.
Flow channelling variability in transit times and tortuosity in a fractured rock model with small scale heterogeneity
<p>Description for file "simulation-particle-data-all-cases".</p> <p>First row is header information, as follows: </p> <p>Column 1, label "avf"<br> The variance of fracture aperture fields (m2)</p> <p>Column 2, label "sdx"<br> The correlation length factor of fracture aperture fields (-)</p> <p>Column 3, label "t"<br> Particle transit time (yr)</p> <p>Column 4, label "log_t"<br> Base-10 logarithm of transit time </p> <p>Column 5, label "l"<br> Particle trajectory length (m)</p> <p>Column 6, label "tort"<br> Particle trajectory tortuosity (-)</p>
Data for "Segregation-induced flow transitions in rock-ice avalanches"
<p>This is raw data and the codes needed to replicate all the graphs in the manuscript entitled "Segregation-induced flow transitions in rock-ice avalanche".</p>
Transit Time Flow Measurement in Coronary Surgery
ClinicalTrials.gov study NCT06471062. IPD Sharing: UNDECIDED. Countries: 1. Publications: 0.
Dopaminergic Modulation of Choroidal Blood Flow Changes During Dark/Light Transitions
ClinicalTrials.gov study NCT00280501. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Mechanisms of Choroidal Blood Flow Changes During Dark/Light Transitions
ClinicalTrials.gov study NCT00431392. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Choroidal Blood Flow Changes During Dark/Light Transitions in Patients With Insulin-dependent Diabetes Mellitus (IDDM)
ClinicalTrials.gov study NCT00718614. IPD Sharing: Not stated. Countries: 1. Publications: 0.
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.