Nhiễu (Noise)#

Tham Chiếu (Reference)

Thể Loại (Type):

Phạm Vi (Domain)

Panel (Bảng):

Vật Lý (Physics) ‣ Chất Lỏng (Fluid) ‣ Nhiễu (Noise)

Adding noise to the gas simulation creates a finer detailed looking simulation on top of the base. This makes it possible to add more details to gases (i.e. fire or smoke or both) without changing the overall fluid motion.

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Fluid noise is an implementation of Wavelet Turbulence for Fluid Simulation.

Besides enabling parts of the interface, checking Noise lets the cache know which simulation data to read. If, for example, Noise is enabled but there is no noise simulation data to read it will show an empty domain. The checkbox does not reset the cache and can be used to switch the view between base resolution and noise view.

Hệ Số Gia Tăng Độ Phân Giải (Upres Factor)

Factor by which to enhance the resolution of the noise. The scaling factor is coupled to the Resolution Divisions.

Độ Đậm/Sức Mạnh/Cường Độ (Strength)

Strength of the noise. Higher values result in more turbulent vortices.

Tỷ Lệ (Scale)

Scale of the noise. Greater values result in larger vortices.

Thời Gian (Time)

Animation time of the noise. This value has an influence on where the noise field is evaluated. It can be used as a seed to give wavelet noise a slightly different look in two domains that are otherwise the same.

Luồng khói với thời gian hoạt họa khác nhau. Mặc dù chuyển động chất lỏng của cả bốn luồng khói đều giống nhau, nhưng mỗi ví dụ lại có một cái nhìn độc đáo riêng.#
../../../../../_images/physics_fluid_type_domain_gas_noise_timeanim-0-1.png

Thời Gian Hoạt Họa: 0.1#

../../../../../_images/physics_fluid_type_domain_gas_noise_timeanim-1-0.png

Thời Gian Hoạt Họa: 1.0#

../../../../../_images/physics_fluid_type_domain_gas_noise_timeanim-2-5.png

Thời Gian Hoạt Họa: 2.5#

../../../../../_images/physics_fluid_type_domain_gas_noise_timeanim-10-0.png

Thời Gian Hoạt Họa: 10.0#

Ghi chú

Resolution Divisions and Upres Factor are not equivalent. By using different combinations of these resolution settings, you can obtain a variety of different styles of smoke.

Sự so sánh mô phỏng lửa cháy có và không có nhiễu trong cùng một độ phân giải khung lưới đồ thị.#
../../../../../_images/physics_fluid_type_domain_gas_noise_base-res-1.png

Resolution Division: 200, without noise#

../../../../../_images/physics_fluid_type_domain_gas_noise_base-res-2.png

Resolution Divisions: 100, Noise scale: 2.#

Low division simulations with lots of Upres Factor divisions generally appear smaller in real-world scale and can be used to achieve pyroclastic plumes such as in the following image:

../../../../../_images/physics_fluid_type_domain_gas_noise_note-resolution.jpg
Nướng Nhiễu, Phóng Thích Nhiễu (Bake Noise, Free Noise)

This option is only available when using the Modular cache type.

The progress will be displayed in the status bar. Pressing Esc will pause the simulation.

Once the simulation has been baked, the cache can be deleted by pressing Free Noise. It is possible to pause or resume a Bake Noise process.