Laminar and turbulent flow in water

Riveros, Héctor G.; Riveros-Rosas, David

doi:10.1088/0031-9120/45/3/010

Cited by 8 publications

(10 citation statements)

References 2 publications

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“…Algunos autores han propuesto que estos efectos se pueden describir al ajustar los resultados experimentales a funciones logarítmicas [41], polinomios de sexto grado [4], cuar-to grado [37] y tercer grado [43] considerandoúnicamente el efecto del drag sobre el cohete. Al tener un conjunto de n parejas de datos, estos pueden ser ajustados hasta un polinomio de grado n, con un factor de correlación igual a 1.…”

Section: Resultsunclassified

“…La solución de esta ecuación queda determinada por la relación funcional que describe el drag (F drag ), el cambio de masaṁ en función de la densidad del fluido dentro del cohete debido a los cambios de presión. La solución a este problema ha sido ampliamente abordado en la literatura,empleando diferentes métodos de análisis [1][2][3][4]13,14,[21][22][23][24][25][26][27][28][29][37][38][39][40][41][42][43].…”

Section: Modelo Físicounclassified

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Cohetes hidráulicos con videos en cámara lenta

et al. 2018

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In this paper, the velocity and acceleration of four water rockets is determined, using the least squares method and the Euler’s method. The position and time data are obtained from the analysis of slow-motion videos of the launch of the rockets, processed with the video analyzer software “Tracker”. This experiment is proposed as a pedagogical tool for the exploration by students of high school and first semester of sciencie and engineering of basic concepts of kinematics and dynamics in systems with variable mass and acceleration.

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Section: Resultsunclassified

Section: Modelo Físicounclassified

Cohetes hidráulicos con videos en cámara lenta

et al. 2018

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“…Fluid motion of the atmosphere can be divided into two basic forms, laminar and turbulent flow (Riveros and Riveros-Rosas, 2010). As an important form of the atmospheric motion, turbulence can lead to a certain random overturn and irregular fluctuation in temperature, air pressure, and humidity of each layer (Fritts et al, 2012;Sharman et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Case Analysis of Turbulence From High-Resolution Sounding Data in Northwest China

Qin

Zheng

et al. 2022

Front. Environ. Sci.

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This study calculated the Thorpe scale, thickness of turbulent layer, turbulent kinetic energy dissipation rate, and turbulent diffusion coefficient based on the Thorpe method using a set of near-space high-resolution radiosonde data in northwest China, and a case study was conducted to analyze the large-scale turbulent layer in the middle stratosphere. The results showed that the most turbulent layers exist near from the middle and upper troposphere to the tropopause region, accounting for 44.0% of the total turbulence, and the largest Thorpe scale and thickness of turbulent layer also appear in this altitude range. In addition, affected by the large-scale turbulence near the tropopause, the calculated turbulent energy dissipation rate and diffusion coefficient also have maximum values at this altitude, which are 0.003 m2s−3 and 6.94 m2s−1, respectively. By analyzing the meteorological elements, it is found that there is an obvious correlation between precipitation and large-scale turbulence in the stratosphere. When the precipitation occurs, the corresponding two sets of radiosondes detected larger-scale turbulence layers in the middle stratosphere.

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“…There are two forms of fluid movement in the atmosphere, namely, laminar flow and turbulent flow [1]. Laminar flow gives the atmosphere a layered structure, and turbulence causes mixing between the upper and lower layers of air so that mass and energy can be exchanged and transmitted in all directions.…”

Section: Introductionmentioning

confidence: 99%

Statistical Analysis of Turbulence Characteristics over the Tropical Western Pacific Based on Radiosonde Data

Sheng

Zhou

et al. 2020

Atmosphere

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The tropical region is a key area for the interaction between the stratosphere and troposphere. The strong convective activity in the troposphere produces a series of gravity wave activities, which result in strong and widespread turbulence over the region. Therefore, studying the turbulent activity in the western Pacific is essential for understanding the characteristics of atmospheric disturbance over this region, which has the world’s most complex circulation system. In this paper, we explore the characteristics of atmospheric turbulence distribution over Guam in this region, and the Thorpe sorting method is used to study one-second resolution radiosonde data from the US. On the basis of the background field and local instability, the turbulence generation mechanism is discussed in detail. Results show that the US high-resolution balloon data are efficacious for tropospheric turbulence retrieval but increasingly affected by instrument noise as altitude increases. It is also found that there is a strong turbulent mixing band caused by both shear instability and static instability near the tropopause, where the turbulence activity is markedly enhanced and characterized by annual oscillation, reaching the maximum from July to September.

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Laminar and turbulent flow in water

Cited by 8 publications

References 2 publications

Cohetes hidráulicos con videos en cámara lenta

Cohetes hidráulicos con videos en cámara lenta

Case Analysis of Turbulence From High-Resolution Sounding Data in Northwest China

Statistical Analysis of Turbulence Characteristics over the Tropical Western Pacific Based on Radiosonde Data

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