What is the definition of free traffic and what is the definition of flow?

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Flow refers to the amount of fluid flowing through the effective section of a closed pipe or open channel per unit time, also known as instantaneous flow.

When the amount of fluid is expressed in volume, it is called volumetric flow; When the amount of fluid is expressed in mass, it is called mass flow. The volume of fluid flowing through a section of a pipe per unit of time is called the volumetric flow rate of that cross-section. It is referred to as flow and is represented by q.

Flow, from the perspective of hydraulics, should be: the volume of water through a certain water section per unit time, its common unit is cubic meters per second, mostly used for the measurement of the inflow and outflow of rivers and lakes, the measurement method of flow, from the perspective of hydrological station, can be divided into buoy method, flow meter method, ultrasonic method, etc., flow rate meter method measurement accuracy is the highest.

Commonly used statistical indicators include the number of unique users, the total number of users (including repeat visitors), the number of page views, the number of page views per user, the average time spent by users, etc.

The basis of access statistical analysis is to obtain the basic data of traffic, according to the relevant articles of online marketing new observation, traffic statistical indicators can be roughly divided into three categories, each category contains a certain number of statistical indicators.

Explanation of traffic.

1) [rate of flow] refers to the number of flowing objects passing through in a unit of time A system capable of handling a flow rate of 100 gallons per second (2) [volume of flow] The number of vehicles or pedestrians passing through a specified point within a specified period of traffic Flow Detailed explanation (1).The amount of fluid passing through a cross-section of a river, channel, or pipe per unit of time. Generally refers to the volume flow rate, expressed in cubic meters per second.

Biye's "Han Water Surging" The average annual flow of the Han River is greater than that of the Yellow River. This abundant amount of water makes the Jianghan Plain sparkling everywhere, and the water network is vertical and horizontal. Xu Chi, "Into the Gorge":

But once the kind of flood that occurs once in a thousand years hits, the water level is even higher, and the flow can reach 100,000 square meters. ” 2).The number of vehicles, people, etc., passing through the road per unit of time.

Such as: traffic flow, passenger flow.

The word decomposition Explanation of flow flow ú liquid moves: flowing water. Perspire.

Bleed. Shed tears. process.

Diarrhoea. Liquid. Running water does not rot.

Sweat like a pig. Go with the flow (with the undulation of the waves, drifting with the flowing water, metaphorically having no opinion, following the current). Flows erratically like water :

Circulation (僴). Circulate. Roving bandits.

Prepare for wandering. Interpretation of the amount of dissociation Quantity cracking and rolling auspicious á A device for determining and measuring the quantity, length, height, depth, distance, etc. of things: a measuring tool.

Measuring cup. Graduated cylinder. Protractor.

I determine, measure, and measure with a measuring instrument or other thing that is a standard. Measurement.

Measurement. Take your temperature. Estimates, speculations:

Measure. Consider. Think.

Quality.

q=πr^2√(2p/ρ)

where q is the flow rate, r is the pipe radius, and p is the pressure and density of the liquid.

Flow rate = flow rate (pipe inner diameter pipe inner diameter 4);

For liquids, pressure has nothing to do with the flow rate, pipe diameter, or flow rate, because liquids are considered incompressible; However, for gases, the impact is greater, and the gaseous equation can be used to convert p v=rt

The pressure and pipe diameter have requirements for the early thickness of the pipe wall, which can be known from the simplified strength formula: wall thickness = p pipe diameter (2).

The unit is cubic meters per second, then the equation for the flow rate is:

q=sv=constant. (S is the cross-sectional area, V is the water flow velocity) when the incompressible fluid flows steadily, the flow rate through each section of the same flow pipe remains unchanged.

The measurement of the flow rate of a fluid flowing in a certain channel is collectively referred to as flow metering. The fluids of flow measurement are diverse, such as gases, liquids, and mixed fluids; The temperature, pressure, and flow rate of the fluid vary greatly, and the required measurement accuracy also varies. Therefore, the task of flow measurement is to study various corresponding measurement methods according to the measurement purpose, the type of fluid to be measured, the flow state, the measurement place and other measurement conditions, and ensure the correct transmission of the flow value.

Commonly used statistical indicators include the number of unique users, the total number of users (including repeat visitors), the number of page views, the number of page views per user, the average time spent by users, etc.

The basis of the statistical analysis of the visit is to obtain the basic data of the traffic, according to the relevant articles of the new observation of online marketing, the statistical indicators of the traffic can be divided into three categories, each of which contains a certain number of indicators of the system.