The present disclosure discloses a method of ship ice resistance model experiment based on non-refrigerated model ice, including the following steps: determining the overall length L.sub.1, breadth B and scale ratio λ of a selected ship model; determining the size A.sub.1 of an experimental area for placing broken ice in the ship ice resistance model experiment; determining the characteristic length of model ice; determining the quantitative proportion of the model ice for each size under the target coverage ratio c of the model; obtaining the number of the model ice for each size under the target coverage ratio according to the quantitative proportion of the model ice for each size under the target coverage ratio c and the total area A.sub.2 of the model ice; determining the geometrical shape and parameters of each size under the target coverage ratio c of the model ice. The present disclosure solves the problems of poor economy and poor operability in a freezing model ice experiment of an ice basin, and provides a design method for carrying out a ship ice resistance model experiment in a towing tank.

The present disclosure discloses a method of ship ice resistance model experiment based on non-refrigerated model ice, including the following steps: determining the overall length L.sub.1, breadth B and scale ratio λ of a selected ship model; determining the size A.sub.1 of an experimental area for placing broken ice in the ship ice resistance model experiment; determining the characteristic length of model ice; determining the quantitative proportion of the model ice for each size under the target coverage ratio c of the model; obtaining the number of the model ice for each size under the target coverage ratio according to the quantitative proportion of the model ice for each size under the target coverage ratio c and the total area A.sub.2 of the model ice; determining the geometrical shape and parameters of each size under the target coverage ratio c of the model ice. The present disclosure solves the problems of poor economy and poor operability in a freezing model ice experiment of an ice basin, and provides a design method for carrying out a ship ice resistance model experiment in a towing tank.

A modular anti-microbial aerosol atmospheric effect delivery system includes an air compressor, a haze solution reservoir, and an artificial snow solution reservoir in a system enclosure and an electronically controlled haze module and artificial snow module mounted above an attendee room. The haze module is connected to the air compressor and the haze solution reservoir by a hose system. The artificial snow module fluidly is connected to the air compressor and the artificial snow solution reservoir by the hose system. The artificial snow solution reservoir contains an artificial snow solution including sodium lauryl sulfate and citric acid. The haze solution reservoir contains a haze solution propylene glycol or tri-ethylene glycol, and at least one anti-microbial component selected from hydrogen peroxide and citric acid. The solutions are safe and antivirally effective to kill aerosol microbes suspended in the air, reducing transmission of undesirable microbes amongst attendees and workers within indoor environments.

A modular anti-microbial aerosol atmospheric effect delivery system includes an air compressor, a haze solution reservoir, and an artificial snow solution reservoir in a system enclosure and an electronically controlled haze module and artificial snow module mounted above an attendee room. The haze module is connected to the air compressor and the haze solution reservoir by a hose system. The artificial snow module fluidly is connected to the air compressor and the artificial snow solution reservoir by the hose system. The artificial snow solution reservoir contains an artificial snow solution including sodium lauryl sulfate and citric acid. The haze solution reservoir contains a haze solution propylene glycol or tri-ethylene glycol, and at least one anti-microbial component selected from hydrogen peroxide and citric acid. The solutions are safe and antivirally effective to kill aerosol microbes suspended in the air, reducing transmission of undesirable microbes amongst attendees and workers within indoor environments.

Disclosed is a snow making method incorporating nucleation agent particles into water and in spraying the water containing the nucleation agent particles onto a surface or into an ambiance whose temperature is lower than 0° C., by way of a device for producing snow or ice. The nucleation agent particles consist in silicate particles whose unit equivalent spherical diameter is lower than 15 μm, and preferably lower than 5 μm. Also disclosed is the powdery product for implementing the method.

Disclosed is a snow making method incorporating nucleation agent particles into water and in spraying the water containing the nucleation agent particles onto a surface or into an ambiance whose temperature is lower than 0° C., by way of a device for producing snow or ice. The nucleation agent particles consist in silicate particles whose unit equivalent spherical diameter is lower than 15 μm, and preferably lower than 5 μm. Also disclosed is the powdery product for implementing the method.

The present disclosure discloses a method of ship ice resistance model experiment based on non-refrigerated model ice, including the following steps: determining the overall length L.sub.1, breadth B and scale ratio λ of a selected ship model; determining the size A.sub.1 of an experimental area for placing broken ice in the ship ice resistance model experiment; determining the characteristic length of model ice; determining the quantitative proportion of the model ice for each size under the target coverage ratio c of the model; obtaining the number of the model ice for each size under the target coverage ratio according to the quantitative proportion of the model ice for each size under the target coverage ratio c and the total area A.sub.2 of the model ice; determining the geometrical shape and parameters of each size under the target coverage ratio c of the model ice. The present disclosure solves the problems of poor economy and poor operability in a freezing model ice experiment of an ice basin, and provides a design method for carrying out a ship ice resistance model experiment in a towing tank.

Disclosed is a snow making method incorporating nucleation agent particles into water and in spraying the water containing the nucleation agent particles onto a surface or into an ambiance whose temperature is lower than 0 C., by way of a device for producing snow or ice. The nucleation agent particles consist in silicate particles whose unit equivalent spherical diameter is lower than 15 m, and preferably lower than 5 m. Also disclosed is the powdery product for implementing the method.

Artificial snow at ambient temperature is used for skiing and is composed of grains of artificial snow at ambient temperature that include magnetic solid grains. The producing method comprises the following steps: (1) using a crushing apparatus to crush a magnetic material into solid grains; (2) using a mesh sieve to sieve the solid grains at a certain particle size; and (3) bonding a layer of material capable of modifying surface property to the surface of the solid grains obtained from sieving. A trail comprises the artificial snow at ambient temperature.

Artificial snow at ambient temperature is used for skiing and is composed of grains of artificial snow at ambient temperature that include magnetic solid grains. The producing method comprises the following steps: (1) using a crushing apparatus to crush a magnetic material into solid grains; (2) using a mesh sieve to sieve the solid grains at a certain particle size; and (3) bonding a layer of material capable of modifying surface property to the surface of the solid grains obtained from sieving. A trail comprises the artificial snow at ambient temperature.