Dataset requirements for shear probes - Revision history

Ilker: /* Shear probe measurements: Data Format */

2023-09-09T15:59:28Z

Shear probe measurements: Data Format

← Older revision		Revision as of 15:59, 9 September 2023
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	Following the recommendations of the [[Flow chart for shear probes \| flow chart]], ATOMIX defined four processing levels a user needs to follow to obtain a standardized estimation of epsilon. The different levels are stored as groups in the NetCDF file, the group names are in brackets:		Following the recommendations of the [[Flow chart for shear probes \| flow chart]], ATOMIX defined four processing levels a user needs to follow to obtain a standardized estimation of epsilon. The different levels are stored as groups in the NetCDF file, the group names are in brackets:

	# [[Level 1 data (shear probes)\|~~Raw timeseries~~ (L1_converted)]]		# [[Level 1 data (shear probes)\|Timeseries in physical units (L1_converted)]]
	#* full resolution data in physical units		#* full resolution data in physical units
	# [[Level 2 data (shear probes)\|Quality-controlled and segmented timeseries (L2_cleaned)]]		# [[Level 2 data (shear probes)\|Quality-controlled and segmented timeseries (L2_cleaned)]]

Ilker at 08:17, 9 January 2023

2023-01-09T08:17:49Z

← Older revision		Revision as of 08:17, 9 January 2023
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	:* a means to estimate the temperature of the fluid so that you can determine its kinematic viscosity.		:* a means to estimate the temperature of the fluid so that you can determine its kinematic viscosity.

	The sampling rate of the shear-probe signal should exceed significantly (by a factor of 2 to 4) the value of 150U, where		In addition, it is highly recommended to have a minimum one vibration sensor or accelerometer that can be used to check and eventually correct for platform vibrations. The sampling rate of the shear-probe signal should exceed significantly (by a factor of 2 to 4) the value of 150U, where
	U is the speed of the flow past the shear-probe. This speed is often called the speed of profiling, even when the probe is fixed in space and the current causes fluid to flow past the shear probe. The value of 150 cpm equals the spatial resolution of the commonly used shear probe.		U is the speed of the flow past the shear-probe. This speed is often called the speed of profiling, even when the probe is fixed in space and the current causes fluid to flow past the shear probe. The value of 150 cpm equals the spatial resolution of the commonly used shear probe.

PeterHoltermann: /* Shear probe measurements: Data Format */

2022-09-27T08:23:39Z

Shear probe measurements: Data Format

← Older revision		Revision as of 08:23, 27 September 2022
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	= Shear probe measurements: Data Format =		= Shear probe measurements: Data Format =

	Following the recommendations of the [[Flow chart for shear probes \| flow chart]], ATOMIX defined four processing levels a user needs to follow to obtain a standardized estimation of epsilon:		Following the recommendations of the [[Flow chart for shear probes \| flow chart]], ATOMIX defined four processing levels a user needs to follow to obtain a standardized estimation of epsilon. The different levels are stored as groups in the NetCDF file, the group names are in brackets:

	# [[Level 1 data (shear probes)\|Raw timeseries]]		# [[Level 1 data (shear probes)\|Raw timeseries (L1_converted)]]
	#* full resolution data in physical units		#* full resolution data in physical units
	# [[Level 2 data (shear probes)\|Quality-controlled and segmented timeseries]]		# [[Level 2 data (shear probes)\|Quality-controlled and segmented timeseries (L2_cleaned)]]
	#* full resolution cleaned and despiked parameters from level 1, subdivided in individual [[Section\|sections]].		#* full resolution cleaned and despiked parameters from level 1, subdivided in individual [[Section\|sections]].
	# [[Level 3 data (shear probes)\|Spectra]]		# [[Level 3 data (shear probes)\|Spectra (L3_spectra)]]
	#* raw and cleaned spectra		#* raw and cleaned spectra
	# [[Level 4 data (shear probes)\|Dissipation <math>\varepsilon</math> estimates]]		# [[Level 4 data (shear probes)\|Dissipation <math>\varepsilon</math> estimates (L4_dissipation)]]
	#* dissipation estimates and corresponding quality parameter as time series		#* dissipation estimates and corresponding quality parameter as time series

Ilker at 20:46, 25 May 2022

2022-05-25T20:46:09Z

← Older revision		Revision as of 20:46, 25 May 2022
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	* [[Netcdf meta data (shear probes)\|list of meta data]]		* [[Netcdf meta data (shear probes)\|list of meta data]]
	* [[Netcdf dimensions (shear probes)\|list of dimension names]]		* [[Netcdf dimensions (shear probes)\|list of dimension names]]
			* [[Quality_control_coding\|quality control coding for dissipation estimates]]

	ATOMIX provides several [[Tentative benchmarks for shear probes\|benchmark data sets]] following these guidelines.		ATOMIX provides several [[Tentative benchmarks for shear probes\|benchmark data sets]] following these guidelines.

Ilker at 19:29, 25 May 2022

2022-05-25T19:29:28Z

← Older revision		Revision as of 19:29, 25 May 2022
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	This page provides an overview of the NetCDF format of benchmark dataset for instruments that measure microstructure shear using airfoil probes. The data format recommended is summarized in [[Netcdf dimensions (shear probes)\|standard dimensions]] and ~~should~~ include necessary [[Netcdf meta data (shear probes)\|meta data]]~~. ATOMIX provides several [[Tentative benchmarks for shear probes\|benchmark data sets]] following these guidelines~~.		This page provides an overview of the NetCDF format of benchmark dataset for instruments that measure microstructure shear using airfoil probes. The data format recommended is summarized in [[#Shear probe measurements: Data Format\|Data Format]] below.
			<br>
			Please use the following naming convention for [[Netcdf dimensions (shear probes)\|standard dimensions]] and include the necessary [[Netcdf meta data (shear probes)\|meta data]].

	* [[Netcdf meta data (shear probes)\|list of meta data]]		* [[Netcdf meta data (shear probes)\|list of meta data]]
	* [[Netcdf dimensions (shear probes)\|list of dimension names]]		* [[Netcdf dimensions (shear probes)\|list of dimension names]]

			ATOMIX provides several [[Tentative benchmarks for shear probes\|benchmark data sets]] following these guidelines.

	= Minimum and desirable data set =		= Minimum and desirable data set =

Ilker at 16:25, 24 May 2022

2022-05-24T16:25:45Z

← Older revision		Revision as of 16:25, 24 May 2022
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	This page provides an overview of the NetCDF format of benchmark dataset for instruments that measure microstructure shear using airfoil probes. The data format recommended is summarized in [[Netcdf dimensions (shear probes)\|standard dimensions]] and should include necessary [[Netcdf meta data (shear probes)\|meta data]]. ATOMIX provides several [[Tentative benchmarks for shear probes\|benchmark data sets]] following these guidelines.		This page provides an overview of the NetCDF format of benchmark dataset for instruments that measure microstructure shear using airfoil probes. The data format recommended is summarized in [[Netcdf dimensions (shear probes)\|standard dimensions]] and should include necessary [[Netcdf meta data (shear probes)\|meta data]]. ATOMIX provides several [[Tentative benchmarks for shear probes\|benchmark data sets]] following these guidelines.

			* [[Netcdf meta data (shear probes)\|list of meta data]]
			* [[Netcdf dimensions (shear probes)\|list of dimension names]]

	= Minimum and desirable data set =		= Minimum and desirable data set =

Ilker at 11:51, 7 May 2022

2022-05-07T11:51:59Z

← Older revision		Revision as of 11:51, 7 May 2022
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	This page provides an overview of the NetCDF format of benchmark dataset for instruments that measure microstructure shear using airfoil probes. The data format recommended is summarized in [[Netcdf dimensions (shear probes)\|standard dimensions]] and should include necessary [[Netcdf meta data (shear probes)\|meta data]]. ATOMIX provides several [[Tentative benchmarks for shear probes\|benchmark data sets]] following these guidelines.		This page provides an overview of the NetCDF format of benchmark dataset for instruments that measure microstructure shear using airfoil probes. The data format recommended is summarized in [[Netcdf dimensions (shear probes)\|standard dimensions]] and should include necessary [[Netcdf meta data (shear probes)\|meta data]]. ATOMIX provides several [[Tentative benchmarks for shear probes\|benchmark data sets]] following these guidelines.
	~~<br>~~
	= Minimum and desirable data set =		= Minimum and desirable data set =
	<div class="mw-collapsible" id="dataset" data-collapsetext="Collapse" data-expandtext="Expand">		<div class="mw-collapsible" id="dataset" data-collapsetext="Collapse" data-expandtext="Expand">
	~~<br>~~

	* The absolute minimum signals and information required to estimate the rate of dissipation of kinetic energy consists of:		* The absolute minimum signals and information required to estimate the rate of dissipation of kinetic energy consists of:

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	The sampling rate of the shear-probe signal should exceed significantly (by a factor of 2 to 4) the value of 150U, where		The sampling rate of the shear-probe signal should exceed significantly (by a factor of 2 to 4) the value of 150U, where
	U is the speed of the flow past the shear-probe. This speed is often called the speed of profiling, even when the probe is fixed in space and the current causes fluid to flow past the shear probe. The value of 150 cpm equals the spatial resolution of the commonly used shear probe.		U is the speed of the flow past the shear-probe. This speed is often called the speed of profiling, even when the probe is fixed in space and the current causes fluid to flow past the shear probe. The value of 150 cpm equals the spatial resolution of the commonly used shear probe.
	~~<br>~~

	* The desirable data set		* The desirable data set

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	Most commonly available instruments carry two shear probes that are frequently oriented so that they measure orthogonal components of the shear and, thus, provide two independent estimates of the rate of dissipation that you should agree statistically.		Most commonly available instruments carry two shear probes that are frequently oriented so that they measure orthogonal components of the shear and, thus, provide two independent estimates of the rate of dissipation that you should agree statistically.
	</div>		</div>


	= Shear probe measurements: Data Format =		= Shear probe measurements: Data Format =

Ilker at 11:24, 7 May 2022

2022-05-07T11:24:00Z

← Older revision		Revision as of 11:24, 7 May 2022
Line 1:		Line 1:

	This page provides an overview of the NetCDF format of benchmark dataset for instruments that measure microstructure shear using airfoil probes. The data format recommended is summarized in [[Netcdf dimensions (shear probes)\|standard dimensions]] and should include necessary [[Netcdf meta data (shear probes)\|meta data]]. ATOMIX provides several [[Tentative benchmarks for shear probes\|benchmark data sets]] following these guidelines.		This page provides an overview of the NetCDF format of benchmark dataset for instruments that measure microstructure shear using airfoil probes. The data format recommended is summarized in [[Netcdf dimensions (shear probes)\|standard dimensions]] and should include necessary [[Netcdf meta data (shear probes)\|meta data]]. ATOMIX provides several [[Tentative benchmarks for shear probes\|benchmark data sets]] following these guidelines.
			<br>
	= Minimum and desirable data set =		= Minimum and desirable data set =
	<div class="mw-collapsible" id="dataset" data-collapsetext="Collapse" data-expandtext="Expand">		<div class="mw-collapsible" id="dataset" data-collapsetext="Collapse" data-expandtext="Expand">

Ilker at 11:23, 7 May 2022

2022-05-07T11:23:34Z

← Older revision		Revision as of 11:23, 7 May 2022
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	= Minimum and desirable data set =		= Minimum and desirable data set =
	<div class="mw-collapsible" id="dataset" data-collapsetext="Collapse" data-expandtext="Expand">		<div class="mw-collapsible" id="dataset" data-collapsetext="Collapse" data-expandtext="Expand">
			<br>

	* The absolute minimum signals and information required to estimate the rate of dissipation of kinetic energy consists of:		* The absolute minimum signals and information required to estimate the rate of dissipation of kinetic energy consists of:

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	The sampling rate of the shear-probe signal should exceed significantly (by a factor of 2 to 4) the value of 150U, where		The sampling rate of the shear-probe signal should exceed significantly (by a factor of 2 to 4) the value of 150U, where
	U is the speed of the flow past the shear-probe. This speed is often called the speed of profiling, even when the probe is fixed in space and the current causes fluid to flow past the shear probe. The value of 150 cpm equals the spatial resolution of the commonly used shear probe.		U is the speed of the flow past the shear-probe. This speed is often called the speed of profiling, even when the probe is fixed in space and the current causes fluid to flow past the shear probe. The value of 150 cpm equals the spatial resolution of the commonly used shear probe.
			<br>

	* The desirable data set		* The desirable data set

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	Most commonly available instruments carry two shear probes that are frequently oriented so that they measure orthogonal components of the shear and, thus, provide two independent estimates of the rate of dissipation that you should agree statistically.		Most commonly available instruments carry two shear probes that are frequently oriented so that they measure orthogonal components of the shear and, thus, provide two independent estimates of the rate of dissipation that you should agree statistically.
	</div>		</div>


	= Shear probe measurements: Data Format =		= Shear probe measurements: Data Format =

Ilker at 11:05, 7 May 2022

2022-05-07T11:05:03Z

← Older revision		Revision as of 11:05, 7 May 2022
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	== Shear probe measurements: Data Format ==		= Shear probe measurements: Data Format =

	Following the recommendations of the [[Flow chart for shear probes \| flow chart]], ATOMIX defined four processing levels a user needs to follow to obtain a standardized estimation of epsilon:		Following the recommendations of the [[Flow chart for shear probes \| flow chart]], ATOMIX defined four processing levels a user needs to follow to obtain a standardized estimation of epsilon:

← Older revision		Revision as of 20:46, 25 May 2022
Line 6:		Line 6:
	* [[Netcdf meta data (shear probes)\|list of meta data]]		* [[Netcdf meta data (shear probes)\|list of meta data]]
	* [[Netcdf dimensions (shear probes)\|list of dimension names]]		* [[Netcdf dimensions (shear probes)\|list of dimension names]]
			* [[Quality_control_coding\|quality control coding for dissipation estimates]]

	ATOMIX provides several [[Tentative benchmarks for shear probes\|benchmark data sets]] following these guidelines.		ATOMIX provides several [[Tentative benchmarks for shear probes\|benchmark data sets]] following these guidelines.

← Older revision		Revision as of 19:29, 25 May 2022
Line 1:		Line 1:

	This page provides an overview of the NetCDF format of benchmark dataset for instruments that measure microstructure shear using airfoil probes. The data format recommended is summarized in [[Netcdf dimensions (shear probes)\|standard dimensions]] and ~~should~~ include necessary [[Netcdf meta data (shear probes)\|meta data]]~~. ATOMIX provides several [[Tentative benchmarks for shear probes\|benchmark data sets]] following these guidelines~~.		This page provides an overview of the NetCDF format of benchmark dataset for instruments that measure microstructure shear using airfoil probes. The data format recommended is summarized in [[#Shear probe measurements: Data Format\|Data Format]] below.
			<br>
			Please use the following naming convention for [[Netcdf dimensions (shear probes)\|standard dimensions]] and include the necessary [[Netcdf meta data (shear probes)\|meta data]].

	* [[Netcdf meta data (shear probes)\|list of meta data]]		* [[Netcdf meta data (shear probes)\|list of meta data]]
	* [[Netcdf dimensions (shear probes)\|list of dimension names]]		* [[Netcdf dimensions (shear probes)\|list of dimension names]]

			ATOMIX provides several [[Tentative benchmarks for shear probes\|benchmark data sets]] following these guidelines.

	= Minimum and desirable data set =		= Minimum and desirable data set =